roof drill (four-cylinder two-column)
CN309735726SActive Publication Date: 2026-01-13HUNAN CHUANGYUAN HIGH TECH MACHINERY CO LTD
View PDF 0 Cites 0 Cited by
Patent Information
- Application Number
- CN202530262424.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2040-05-12
Smart Images
Figure 000009_ABST
Abstract
1. The name of the design product: roof rig (four oil cylinders and two vertical columns). 2. The use of the design product: used for the construction of ventilation shaft, chute shaft, cable and water pipe arrangement shaft in underground mine. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.
Need to check novelty before this filing date? Find Prior Art