Tunnel maintenance machine

CN309915963SActive Publication Date: 2026-04-14CHONGQING UNDERGROUND APPL TECH RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
CHONGQING UNDERGROUND APPL TECH RES INST CO LTD
Filing Date
2025-08-04
Publication Date
2026-04-14

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Abstract

1. Name of the product in this design: Tunnel Inspection Machine. 2. Purpose of this design: The product is used for daily tunnel inspection work. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.
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