Bor-Sen Chang

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Junghe City, TW

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Patents Grantslast 30 patents

Information Patent Grant
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- Patent number 6,727,439
- Issue date Apr 27, 2004
- Aiptek International Inc.
- Ching-Chuan Chao
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
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- Publication number 20030141119
- Publication date Jul 31, 2003
- Ching-Chuan Chao
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES