Semi-circular gravity pull ring manhole cover
CN310071861SActive Publication Date: 2026-07-03JIANGSU LANDING ENG MATERIALS CO LTD
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Patent Information
- Application Number
- CN202530702999.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2040-11-28
Smart Images
Figure 000001_ABST
Abstract
1. Name of this design product: Semi-circular gravity pull ring manhole cover. 2. Purpose of this design: For use as a manhole cover. 3. The key design feature of this product is its shape. 4. Images or photos that best illustrate the design's key points: Design 1 uses a combination of state diagrams. 5. Design 1 is designated as the basic design.
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