Tzu-cheng Chang

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Hualien County, TW

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Patents Grantslast 30 patents

Information Patent Grant
Splash-proof umbrella structure
- Patent number 8,240,322
- Issue date Aug 14, 2012
- Tzu-cheng Chang
- A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

Information Patent Application
Splash-Proof Umbrella Structure
- Publication number 20120006367
- Publication date Jan 12, 2012
- Tzu-cheng Chang
- A45 - HAND OR TRAVELLING ARTICLES