Chi-Tsao Chiang

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Taoyuan Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable hinged door closer
- Patent number 8,181,311
- Issue date May 22, 2012
- Heng Kuo Co., Ltd.
- Chi-Tsao Chiang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Door closer
- Patent number 6,493,904
- Issue date Dec 17, 2002
- Heng Kuo Co., Ltd.
- Chi-Tsao Chiang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
ADJUSTABLE HINGED DOOR CLOSER
- Publication number 20110030167
- Publication date Feb 10, 2011
- HENG KUO Co., Ltd.
- Chi-Tsao Chiang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Door closer
- Publication number 20080034535
- Publication date Feb 14, 2008
- Chi-Tsao Chiang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES