Pen Yen Chang

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Taipei County, TW

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Patents Grantslast 30 patents

Information Patent Grant
Electric appliance/extension cord assembly with electromagnetic rad...
- Patent number 7,186,146
- Issue date Mar 6, 2007
- Pen Yen Chang
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Extension Cord with Electromagnetic Radiation-Shielding Function
- Publication number 20070181325
- Publication date Aug 9, 2007
- Kuo Hung Liao
- H01 - BASIC ELECTRIC ELEMENTS