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Patents Grantslast 30 patents

Information Patent Grant
Tube coupling device having check valve
- Patent number 8,245,721
- Issue date Aug 21, 2012
- Kuang-Ming Kuo
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
Tube coupling device having check valve
- Publication number 20110248201
- Publication date Oct 13, 2011
- Kuang-Ming Kuo
- E03 - WATER SUPPLY SEWERAGE