Drill bits for tunnel boring machines

CN309440689SActive Publication Date: 2025-08-15CHONGQING HONGGONG INSTRUCTIONAL MACHINE
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Patent Information

Application Number
CN202430822329.0
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-08-15
Estimated Expiration
2039-12-25

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Abstract

1. Name of the product of this design: Drill bit for tunneling drilling rig. 2. Application of this product design: used for drilling in engineering construction. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.
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