Manhole cover (water supply and drainage engineering)

CN309570190SActive Publication Date: 2025-10-28LONGGE ENG DESIGN CO LTD
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Patent Information

Application Number
CN202530132970.6
Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2025-03-19
Publication Date
2025-10-28
Estimated Expiration
2040-03-19

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Abstract

1. The name of this design product: Manhole cover (water supply and drainage engineering). 2. Purpose of this design product: used as a manhole cover. 3. The key design features of this product are the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.
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