Chao-Nan Chang

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Feng-Yuan City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Structure of a buckle to fasten shoelaces
- Patent number 6,718,602
- Issue date Apr 13, 2004
- Chao-Nan Chang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
Shoelace fastening device
- Publication number 20110016680
- Publication date Jan 27, 2011
- Chao-Nan Chang
- A43 - FOOTWEAR
Information Patent Application
Structure of a buckle to fasten shoelaces
- Publication number 20040158958
- Publication date Aug 19, 2004
- Chao-Nan Chang
- A43 - FOOTWEAR