Hsin Chung Chang

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Taoyuan Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Range hood
- Patent number 6,470,880
- Issue date Oct 29, 2002
- Enlight Corp.
- Hsin-Chung Chang
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Ventilation fan
- Patent number 6,435,964
- Issue date Aug 20, 2002
- Enlight Corporation
- Hsin Chung Chang
- F24 - HEATING RANGES VENTILATING