Yiu Chung Wan

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Patents Grantslast 30 patents

Information Patent Grant
Can opener
- Patent number 7,168,170
- Issue date Jan 30, 2007
- Kwok Kuen So
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...

Patents Applicationslast 30 patents

Information Patent Application
CAN OPENER
- Publication number 20070033814
- Publication date Feb 15, 2007
- Kwok Kuen So
- Kwok Kuen So
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...