Smart manhole covers (2)

CN309787070SActive Publication Date: 2026-02-10SHANGHAI GUANNENGHUI INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202530334942.2
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2025-06-11
Publication Date
2026-02-10
Estimated Expiration
2040-06-11

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Abstract

1. Name of the product in this design: Smart Manhole Cover (2). 2. Purpose of this design: This design is used to be embedded in a circular cement manhole cover to monitor whether flammable and explosive gases such as methane and ethane are leaking from the manhole of a gas pipeline node. 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 rendering 1.
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