Tunnel portal support device

CN310157023SActive Publication Date: 2026-08-18SINOHYDRO BUREAU 5
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Patent Information

Application Number
CN202630136242.7
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2026-03-26
Publication Date
2026-08-18
Estimated Expiration
2041-03-26

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Abstract

1. Name of the product in this design: Tunnel entrance support device. 2. Purpose of this design: Used in tunnel construction to support the tunnel entrance. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.
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