Christopher Chen

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Hsinchu City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Stick umbrella with reinforced frame
- Patent number 6,715,504
- Issue date Apr 6, 2004
- Christopher Chen
- A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

Information Patent Application
Protecting structure for umbrella ribs
- Publication number 20030226583
- Publication date Dec 11, 2003
- Christopher Chen
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Application
Stick umbrella with reinforced frame
- Publication number 20030226582
- Publication date Dec 11, 2003
- Christopher Chen
- A45 - HAND OR TRAVELLING ARTICLES