Weizhi Chen

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Northfield, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Dual flow toilet adjustment system
- Patent number 8,239,976
- Issue date Aug 14, 2012
- Z-Choice International, LLC
- Weizhi Chen
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
DUAL FLOW TOILET ADJUSTMENT SYSTEM
- Publication number 20100229294
- Publication date Sep 16, 2010
- Z-CHOICE INTERNATIONAL, LLC
- Weizhi Chen
- E03 - WATER SUPPLY SEWERAGE