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425results about How to "Avoid repairs" patented technology
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Method and apparatus for measuring on-line failure of turbine thermal barrier coatings
InactiveUS20090312956A1Detect degradationAvoid severe repairThermometer detailsPlug gaugesTurbine bladeEngineering
A method of remotely monitoring the radiant energy (6) emitted from a turbine component such as a turbine blade (1) having a low-reflective surface coating (3) which may be undergoing potential degradation is used to determine whether erosion, spallation, delamination, or the like, of the coating (3) is occurring.
Owner:SIEMENS ENERGY INC
Method and apparatus for measuring on-line failure of turbine thermal barrier coatings
InactiveUS7690840B2Improve efficiencyAvoid maintenanceThermometer detailsPlug gaugesTurbine bladeEngineering
A method of remotely monitoring the radiant energy (6) emitted from a turbine component such as a turbine blade (1) having a low-reflective surface coating (3) which may be undergoing potential degradation is used to determine whether erosion, spallation, delamination, or the like, of the coating (3) is occurring.
Owner:SIEMENS ENERGY INC
Reagents and methods for identifying and modulating expression of genes regulated by p21
InactiveUS6706491B1Good curative effectInhibit cellular senescenceMicrobiological testing/measurementMicroorganism based processesGrowth promotionApoptosis
This invention provides methods and reagents for identifying genes involved in cell cycle progression, growth promotion, modulation of apoptosis, cellular senescence and aging, and methods for identifying compounds that inhibit or potentiate cellular senescence.
Owner:THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS
Compositions and methods to improve the therapeutic benefit of suboptimally administered chemical compounds including substituted naphthalimides such as amonafide for the treatment of immunological, metabolic, infectious, and benign or neoplastic hyperproliferative disease conditions
InactiveUS20160067241A1Increase profitImproved dose determinationBiocideAnimal repellantsDiseaseSide effect
The present invention describes methods and compositions for improving the therapeutic efficacy of therapeutic agents previously limited by suboptimal therapeutic performance by either improving efficacy as monotherapy or reducing side effects. Such methods and compositions are particularly applicable to naphthalimides such as amonafide or analogs, derivatives, or prodrugs thereof.
Owner:BROWN DENNIS M
Automatic vehicle carrying and transferring method and system, and application
InactiveCN109403690AExcellent input costEnsure the cost of waitingParkingsTransfer systemSoftware system
The invention discloses an automatic vehicle carrying and transferring method and system. The automatic vehicle carrying and transferring method comprises the following steps that the interactive relation is established with a user; the parking request of the user is obtained, and a loading and transporting device for loading and transporting a vehicle of the user is dispatched to the parking position of the user; the loading and transporting device automatically loads and transports the vehicle of the user to be parked on a designated parking position; the pick-up request of the user is obtained, and the loading and transporting device for loading and transporting the vehicle of the user is dispatched to the designated parking position; and the loading and transporting device automatically loads and transports the vehicle of the user to be parked on a designated pick-up position. The automatic vehicle carrying and transferring system comprises the loading and transporting device, a multiple loading and transporting device task scheduling system, a loading and transporting device vehicle-mounted automatic navigation hardware platform and software system, a vehicle transferring station system and a man-machine interaction subsystem, wherein the loading and transporting device is a parking robot. The comfort of vehicle parking and picking-up of the user is improved, the operationefficiency is improved, the space utilization rate is increased, the construction cost is lowered, and complicated and tedious operation and maintenance are relatively avoided.
Owner:TONGJI UNIV
Lithium ion battery lamination unit, battery cell, battery cell preparing method and lithium ion battery
InactiveCN105336976AIncrease productivityAvoid misalignmentLarge-sized flat cells/batteriesFinal product manufactureElectrical polarityEngineering
The invention relates to a lithium ion battery lamination unit, a battery cell, a battery cell preparing method and a lithium ion battery and belongs to the technical field of lithium ion batteries. The lithium ion battery lamination unit comprises an inner electrode slice, membranes and outer electrode slices, wherein the polarity of the inner electrode slice and the polarity of the outer electrode slices are opposite, the membranes are attached to the two side faces of the inner electrode slice respectively through a binder, and the outer electrode slices are attached to the outer side faces of the membranes through the binder. According to the lithium ion battery lamination unit, on one hand, dislocation of the membranes relative to the electrode slices can be prevented, and a short circuit between a positive plate and a negative plate can not be formed; on the other hand, during battery cell manufacturing, due to the fact that part of procedures of clamping membranes in the electrode slices are omitted, battery cell manufacturing time is shortened greatly, and the production efficiency of the lithium ion battery is improved.
Owner:DO FLUORIDE NEW ENERGY TECHNOLOGY CO LTD
Restoration process for porosity defects in high pressure die cast engine blocks
ActiveUS7188416B1High level of porosityIncrease manufacturing costMolten spray coatingMetal working apparatusPorosityMetallurgy
A restoration process for restoring surface porosity defects in engine blocks cast using a high pressure die cast method. The areas of an engine block having surface porosity defects are identified and the areas not containing surface porosity defects are masked using an adhesive, reusable, rubberized mask. The masked surface is subsequently cleaned and a metal spray is applied to the surface porosity defects. The mask is removed and the restored surface porosity defects are hand finished to create an engine block having less than 0.05% surface porosity.
Owner:BRUNSWICK CORPORATION
Drive mechanism for shed forming components of a loom
The heald shafts of a power loom are driven by electric D.C. or A.C. motors which have a external rotor or an armature connected to the respective heald shaft through two articulated couplings, for example snap locks, and a push-pull rod. The motors receive control signals from a computerized controller for reversing the motion direction of the external rotor or armature. The stators of the motors are rigidly mounted on a fixed axis secured to the loom frame.
Owner:LINDAUER DORNIER GMBH
Wear assembly for excavating machines
ActiveCN101253298AImprove reliabilityExtended service lifeSoil-shifting machines/dredgersEngineeringRidge
A wear member includes a pair of legs defining a slot straddles the digging edge of a piece of excavating equipment. In one construction, the slot is formed at its front end with a pair of inclined surfaces and a laterally extending ridge that is fit within a complementary channel on the digging edge. A lock is received within an opening in the wear member to releasably secure the wear member to the digging edge.
Owner:ESCO CORP
System and method for detecting on-line state of feeding loop in tobacco processing process
ActiveCN103616878ALow investment costImprove scienceTotal factory controlProgramme total factory controlEquipment stateIndustrial engineering
The invention discloses a system and method for detecting the on-line state of a feeding loop in the tobacco processing process. The system comprises a feeding pipeline pressure detection sensor, a feeding loop flow meter, a feeding front belt scale, a PLC, a feeding loop early warning system and a warning output module. A short-term early warning judgment module, a long-term early warning judgment module and a pipeline pressure early warning judgment module which are sequentially connected are arranged inside the feeding loop early warning system. The feeding loop early warning system is used for analyzing faults probably occurring in a pipeline in a short term or a long term on a feeding system, and gives out early warning prompts for the regular faults. The warning output module is used for outputting short-term warning signals, long-term warning signals and pipeline pressure warning signals. Early warning of the state of equipment is conducted according to the health coefficients of the feeding loop of the system, the maintenance cleaning frequency and the regular repair frequency of the equipment can be adjusted, and the mean time between faults of the equipment is increased.
Owner:CHINA TOBACCO SHANDONG IND
Method and device for repairing piping
ActiveUS8869839B1Avoid repairsSufficient pressureUnderground chambersPipe elementsLine tubingResin embedding
An device and method for repairing the junction of a main pipe line and a lateral pipe. The device uses a series of independently controlled bladders to adjust the timing and pressure exerted by the bladders on the pipes. The device also uses a liner assembly of resin absorbent material is formed, with a tubular lateral liner connected to a concentric circular main liner. The liner also includes an opening to facilitate loading of the liner in the device. Upon loading the bladders and resin-embedded liner into a train, the device is positioned and the bladders independently inflated, either concurrently or in sequence, installing the liner assembly onto the pipe. Once the resin is cured, the bladder assembly and launcher are removed from the sewer pipe.
Owner:PERMA LINER IND
Safe evaluating method for pressure vessel after short-time firing
InactiveCN102052995AImprove rationalityAvoid repairsFluid-tightness measurementSpecial data processing applicationsThree stageEngineering
The invention discloses a safe evaluating method for a pressure vessel after short-time firing, which comprises the steps as follows: detecting the ambient temperature of the fired pressure vessel; deciding to perform primary evaluation or secondary evaluation according to the temperature, wherein the primary evaluation is to detect the leak tightness of the equipment after the completeness of the coating and the fire-resistant coating of the pressure vessel is detected; and the secondary evaluation is to detect the deformation size of the pressure vessel; testing tensile strength and determining the highest permitted service pressure; judging creep deformation area, determining creep deformation service life or detecting the leak tightness of the pressure vessel; or performing a three-stage evaluation after the secondary evaluation to carry out on-site metallographic analysis, mechanical property actual measurement and rigidity testing after stress analysis. The method provided by the invention can analyze safety of pressure vessel equipment after short time firing, so as to avoid unnecessary maintenance and guarantee fee, further improve the reasonableness of the making of high-temperature production equipment maintenance plan.
Owner:EAST CHINA UNIV OF SCI & TECH
Elevating slide rail type high-pole lamp
InactiveCN102425755AAvoid lossIncrease lossLighting support devicesPoint-like light sourceWind drivenElectricity
The invention discloses an elevating slide rail type high-pole lamp, which comprises a lamp pole and an LED (Light-Emitting Diode) lamp arranged at the top end of the lamp pole, wherein the lamp pole is provided with a sliding chute; a screw rod is arranged in the sliding chute; a threaded sleeve which is matched with the screw rod is sleeved on the screw rod; a conical shaft for driving the screw rod to rotate and a power motor for driving the conical shaft to rotate are arranged at the lower end of the lamp pole; a wind motor and a storage battery are arranged at the upper end of the lamp pole; the lamp pole is provided with an operation panel for controlling the power motor to run and a light-operated switch for controlling the LED lamp; and the storage battery is electrically connected with the LED lamp through the light-operated switch, and is electrically connected with the power motor through the operation panel. In the invention, a wind-driven generator is used for providing electric energy for the power motor and the LED lamp, so that energy is saved greatly; and power-on and power-off of the LED lamp is controlled by using the light-operated switch according to the surrounding brightness, so that loss of electric quantity is avoided. When a street lamp is required to be replaced or maintained, the LED lamp can be lowered to an appropriate position by only using the operation panel, so that maintenance, replacement and operation are convenient, and time and labor are saved.
Owner:SUZHOU JINGLEI PHOTOELECTRIC LIGHTING TECH
Method and device for lining pipe
InactiveUS7896032B2Method is newReduce accumulationUnderground chambersPipe elementsCompressible materialEngineering
The present invention is a new liner assembly for use in pipes constructed from a flexible liner formed from a resin absorbent material. A compressible material, such as stitch-bond or foam, is attached to one or more sides of the liner for forming a taper along the compressible material when the liner is cured in place in the pipe using a curable resin and an expandable bladder to shape the liner to match the inside shape of the pipe. A taper is formed along the compressible material from the inside of the liner down to the inside of the pipe in which the liner is placed. As a result, a taper prevents accumulation of solid materials at the location of the pipe repair and thus prevents future clogging of the pipe at the repair.
Owner:LMK TECH LLC
Heavy metal contaminated soil remediation device
ActiveCN110153164AAvoid repairsPromote repairSoil lifting machinesContaminated soil reclamationSoil remediationEngineering
The invention discloses a heavy metal contaminated soil remediation device which comprises a storage barrel, a conveyor belt, a treatment seat, a connecting plate and a bucket, wherein two pairs of first traveling wheels are symmetrically arranged on two sides of the bottom end of an outer side wall of the treatment seat; and the connecting plate is welded on one side of the bottom end of the outer side wall of the treatment seat. A pulley matched with a guide seat is arranged on a connecting rod at one end of the screening bucket, and a movable sleeve is arranged on the outer side of a guiderod in a sleeving manner on the outer side wall of the screening bucket. On one hand, by utilizing guide of a bevel end of the guide seat, the screening bucket is matched with a reset spring at the other end of the screening bucket in a process of driving the screening bucket to rotate by a motor, so that the screening bucket can sway from side to side in the rotating and screening process, and the screening efficiency and the screening effect are improved; on the other hand, a second magnetic block having the same magnetism as a first magnetic block is arranged on the top of the movable sleeve, so that the movable sleeve enabling the screening bucket to rotate to a position just under the first magnetic block has a vibratory cleaning effect on the screening bucket, and blockage of sieve pores is avoided.
Owner:ANHUI LANDING ENVIRONMENTAL PROTECTION ENERGY TECH
Hand-held power tool
InactiveUS7967079B2Avoid repairsAvoid compressionDrilling rodsConstructionsPortable powerEngineering
A portable power tool includes a motor housing (22a, 22b, 22c, 22d, 68) and a housing cover (26a, 26b, 26c, 26d, 72) that is attached to the motor housing (22a, 22b, 22c, 22d, 68). The portable power tool includes insulation (44a, 44b, 44c, 44d, 70a, 70b) adjacent to the motor housing (22a, 22b, 22c, 22d, 68) and the housing cover (26a, 26b, 26c, 26d, 72), which are guided through a guide (50a, 50b, 50c, 50d, 52a, 52b, 52d, 92) in the direction toward the motor housing (22a, 22b, 22c, 22d, 68) and / or the housing cover (26a, 26b, 26c, 26d, 72).
Owner:ROBERT BOSCH GMBH
Aircraft nose gear control apparatus
The invention relates to an assembly for controlling the rotational degree of freedom for an aircraft landing gear wheel, which can advantageously be used to prevent damage to the aircraft during taxing. In a general embodiment, an upper connection arm is supported by the descending shaft of the landing gear and a pivoting control arm is affixed to a lower region of the landing gear, and a control lock can be used to connect the connection arm to the control arm in order to restrict the rotation of the wheel to a desired range.
Owner:ADAM AIRCRAFT INDUSTRIES +1
Method for preparing cyclohexanone oxime by ammoximation of cyclohexanone
InactiveCN102584624ASimple designIncrease production capacityOximes preparationMolecular sieveState of art
The invention provides a method for preparing cyclohexanone oxime by ammoximation of cyclohexanone. According to the method, 5.0-100 mu m of titanium silicalite molecular sieve is used as a catalyst, the reaction temperature is controlled by using an external circulation heating mode, and a reaction product and the titanium silicalite molecular sieve are separated in an external circulating filter. Compared with the prior art, the method has the advantages that the device investment is low, the separation problem between the catalyst and the reaction product can be better solved, the utilization rates of a molecular sieve and a reaction device can be improved, the reaction effect is better under the condition that the concentration of the catalyst is the same, the control is more stable, the overhauling of the device is easier, and the effective utilization rate of hydrogen peroxide can reach 90% or so.
Owner:湖南兴鹏化工科技有限公司
Method and device for lining pipe
InactiveUS20080078463A1Reduce accumulationReduce chanceUnderground chambersPipe elementsCompressible materialAbsorbent material
The present invention is a new liner assembly for use in pipes constructed from a flexible liner formed from a resin absorbent material. A compressible material, such as stitch-bond or foam, is attached to one or more sides of the liner for forming a taper along the compressible material when the liner is cured in place in the pipe using a curable resin and an expandable bladder to shape the liner to match the inside shape of the pipe. A taper is formed along the compressible material from the inside of the liner down to the inside of the pipe in which the liner is placed. As a result, a taper prevents accumulation of solid materials at the location of the pipe repair and thus prevents future clogging of the pipe at the repair.
Owner:LMK TECH LLC
Method for plastering construction in architectural decoration
ActiveUS20150059284A1Improve efficiencyImprove construction qualityCovering/liningsBuilding repairsStructural engineeringBuilding construction
A method for plastering construction in architectural decoration comprises the following steps: (1) base treatment; (2) performing construction positioning paying-off according to the required plastering height, and longitudinally installing screeding templates along a wall surface subjected to the base treatment in Step (1) according to the paying-off height, a lateral space between adjacent screeding templates being 1.3 to 1.8 meters; (3) plastering; and (4) laying aside the wall surface subjected to the plastering for 12 to 24 hours till plastering mortar on the wall surface is in a half-dried compact hardened state, and using teeth of a saw blade for grinding the mortar along the two adjacent screeding templates through a ruler till the mortar is even. The method can improve the construction efficiency and guarantee the construction quality.
Owner:SHENZHEN GRANDLAND DECORATION GROUP
BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings
The invention relates to BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings. The invention is characterized in that the method mainly comprises the following steps of: (1) setting a rust inhibitor-electrolyte maintaining and circulating system on the building surface; (2) injecting the BE rust inhibitor and the electrolyte into the rust inhibitor-electrolyte maintaining and circulating system; (3) arranging an anode in the rust inhibitor-electrolyte maintaining and circulating system; (4) connecting the anode with a positive electrode of a direct current power supply, and connecting a negative electrode of the power supply with a reinforced steel bar in the building; controlling the current density, and continuously energizing until the BE rust inhibitor effective groups are enriched in the vicinity of the reinforced steel bar in the restored concrete and a protecting film is formed on the surface of the reinforced steel bar. The invention has the effect for discharging chloride ions under the action of the electric field, and has the advantages of simplicity, easy operation, long restoring protection period, low cost and good effect.
Owner:南京艾米伦斯科技开发有限公司
Tissue-engineered bone cartilage composite scaffold and preparation method thereof
InactiveCN105435311AGood biocompatibilityImprove mechanical propertiesTissue regenerationProsthesisCartilage cellsMicro nano
The invention discloses a tissue-engineered bone cartilage composite scaffold and a preparation method thereof, belonging to the technical field of biomaterials. The scaffold is of a multilayer integrated structure and comprises a cartilage tissue scaffold layer, a cartilage tissue calcified layer, a porous cell isolation membrane and a bone tissue scaffold layer. The cartilage tissue scaffold layer is inoculated with cartilage cells, and growth factors for promoting formation of cartilage are introduced to promote growth of cartilage cells. Main raw materials like heparan sulfate proteoglycan with good biocompatibility and degradability are selected and used and the method consisting of a cross-linking reaction, freeze drying, directional pore formation, compounding of multiple layers, overall integration and the like are carried out so as to obtain the functionalized multilayer integrated tissue-engineered bone cartilage composite scaffold with good mechanical properties. According to the invention, micro-nano hydroxyapatite crystal, degradable non-stoichiometric polyethylene glycol / poly(epsilon-caprolactone) nanometer coaxial short fiber, RGD-grafted heparan sulfate proteoglycan / oxidized sodium alginate and N-succinyl chitosan are compounded together to prepare the composite scaffold; and the composite scaffold is mainly used for restoration of full-thickness defects of articular cartilage and subchondral bone.
Owner:SOUTHWEST JIAOTONG UNIV
Water-based nano thin-coating heat preservation paint and preparation method thereof
InactiveCN110791159AImprove physical and chemical propertiesHigh chemical stabilityAnti-corrosive paintsWeather resistanceCorrosion
The invention discloses a water-based nano thin-coating heat preservation paint and a preparation method thereof. The paint comprises the following raw materials by weight: 30-40 parts of an acrylic emulsion, 5-10 parts of titanium dioxide, 20-40 parts of hollow glass beads, 5-20 parts of aerogel and 5-10 parts of a film-forming assistant. According to the invention, the hollow glass beads and aerogel are used as the heat insulation basic raw materials, the heat conductivity coefficient of the paint is greatly reduced and is as low as 0.031-0.035W / m.K, and the paint can reach a remarkable heatinsulation effect under the condition of a very small construction thickness. Meanwhile, the hollow glass beads and the aerogel are conducive to improving the chemical stability of the paint itself,thus improving the covering power, lightening power, corrosion resistance, light resistance and weather resistance, and enhancing the mechanical strength of the paint; cellulose, a wetting dispersant,a defoaming agent and a preservative are mixed; by virtue of ethylene glycol, the acrylic emulsion and a pH regulator, the paint has excellent cohesiveness, weather resistance, film-forming properties, gloss and color retention and mechanical properties; and the use of a vinyl chloride-vinylidene chloride copolymer emulsion also can reach a grade A1 flame retardant effect.
Owner:重庆兴渝新材料研究院有限公司
Triplex hydrofracturing stress measurement push-pull valve
ActiveCN107448169AAvoid repairsAvoid replacement difficultiesFluid removalWell/borehole valve arrangementsStructural engineeringMechanical engineering
Owner:INST OF GEOMECHANICS
Electric motor drive mechanism for shed forming components of a loom
The heald shafts of a power loom are driven by electric D.C. or A.C. motors which have an external rotor or an armature connected to the respective heald shaft through two articulated couplings, for example snap locks, and a push-pull rod. The motors receive control signals from a computerized controller for reversing the motion direction of the external rotor or armature. The stators of the motors are rigidly mounted on a fixed axis secured to the loom frame.
Owner:LINDAUER DORNIER GMBH
Two-degree-of-freedom oscillating screen
PendingCN107537767ALarge amount of processingImprove screening efficiencySievingScreeningChemical industryEnvironmental resistance
The invention discloses a two-degree-of-freedom oscillating screen. The two-degree-of-freedom oscillating screen comprises a base, front supporting rods, rear supporting rods, an oscillating driving device, a vertical shock excitation device, a screen frame and a screen mesh. The front end and the rear end of the screen frame are connected with the base through the front supporting rods and the rear supporting rods. The two-degree-of-freedom oscillating screen can generate shock excitation of two degrees of freedom. The oscillating driving device located in the middle portion of the base provides power for rotating and oscillating of the screen frame. The vertical shock excitation device mounted at the bottom of the screen frame provides power for vertical reciprocating vibration of the screen frame and the screen mesh. Materials on the screen surface can do front-back, left-right and vertical motion to realize screen passing. Under the condition of not changing the occupied area and the screen body structure, the processing capacity can be substantially increased, the production efficiency can be greatly improved, and the production cost can be reduced. The two-degree-of-freedom oscillating screen has the advantages of being simple in structure, high in overall machine reliability, good in comprehensive performance, stable in motion, convenient to maintain and the like and isapplicable to the fields of wood processing, coal, metallurgy, chemical engineering, food and environmental protection.
Owner:ANHUI UNIV OF SCI & TECH
Method for preparing cyclohexanone-oxime from cyclohexanone ammoximation
InactiveCN103360279AEasy to separateSolve the separation problemOximes preparationChemical recyclingMolecular sieveCyclohexanone oxime
The invention relates to a method for preparing cyclohexanone-oxime from cyclohexanone ammoximation. The method comprises the following steps of: contacting reaction materials comprising hydrogen peroxide, cyclohexanone, a solvent and ammonia with titanium silicalite molecular sieves with a concentration of 1-10 wt% for 60-100 minutes at a temperature of 60-90 DEG C and under a pressure ranging from a normal pressure to 0.6 MPa, wherein in the reaction materials, the molar ratio of hydrogen peroxide to cyclohexanone is (1.01 to 1.20): 1, and the molar ratio of ammonia to cyclohexanone is (1.2 to 2.5): 1, and a catalyst is titanium silicalite molecular sieves with an average grain diameter of 10-50 microns; and separating the catalyst, namely, the titanium silicalite molecular sieves from reaction products in an external sintering filter, and then conveying the titanium silicalite molecular sieves into a reactor and recycling. Under a catalyst separation condition provided by the method disclosed by the invention, the reaction products are greatly separated from the molecular sieves, thus solving a separation problem for the catalyst and the reaction products, and avoiding the inconvenience brought to installation, maintenance and replacement caused by arranging a separation component in the reactor.
Owner:WUHAN YOULIKE NEW MATERIAL TECH
Wastewater Hydrocarbon Extraction and Environmental Treatment Method and System
InactiveUS20130284677A1Efficient use ofExtract orDewatering/demulsification with chemical meansLiquid degasificationFiltrationWastewater
Method and system for extracting and recovering hydrocarbons from wastewater and treating the water to improve its condition. A series of specific unit operations result in the extraction of hydrocarbons, solids and contaminants and the treatment of water to a condition which is fit for re-use or environmentally sustainable discharge. Phase separation between the water and hydrocarbons is effected using flotation techniques followed by collection of the hydrocarbons using a movable collection surface. The aqueous phase is processed by multiple filtration steps. The result is significant extraction and recovery of hydrocarbons and conservation of water for re-use or discharge to the environment in a process which is continuous and scalable for large or small operations.
Owner:ROBINSON DAVID
Compositions to improve the therapeutic benefit of bisantrene and analogs and derivatives thereof
ActiveUS20160220537A1Increase profitAvoid repairsOrganic active ingredientsMicrobiological testing/measurementAnthraceneSide effect
Owner:RACE ONCOLOGY LTD
Rock breaking device, protection valve and a method of operating a rock breaking device
ActiveCN101403223AAvoid repairsAvoid maintenanceFluid-pressure actuator safetyServomotor componentsInlet channelEngineering
Owner:SANDVIK MINING & CONSTR OY
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