Sewer check valve (upgraded double insurance)
CN309181348SInactive Publication Date: 2025-03-18徐昌阳
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Patent Information
- Application Number
- CN202430507872.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-03-18
- Estimated Expiration
- Not applicable · inactive patent
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Figure 000007_ABST
Abstract
1. The name of this design product: sewer check valve (upgraded double insurance). 2. Purpose of this design product: to prevent water from flowing back into the sewer and causing odor. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
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