Jen-Show Chang

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Taichung, TW

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Patents Applicationslast 30 patents

Information Patent Application
Dual Drive Wheelchair
- Publication number 20160058636
- Publication date Mar 3, 2016
- Optimal Medical Co., Ltd.
- Jen-Pen Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Skateboard with illumination device
- Publication number 20050029767
- Publication date Feb 10, 2005
- Jen-Show Chang
- A63 - SPORTS GAMES AMUSEMENTS