Zhi Chung Chang

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Taipei Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Electromagnetic lock having guiding mechanism
- Patent number 6,260,892
- Issue date Jul 17, 2001
- Zhi Chung Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Electrical lock device mounting structure
- Publication number 20080023970
- Publication date Jan 31, 2008
- Gianni Industries Inc.
- Zhi Chung Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES