Chung-Ming Tseng

Follow

Person

Taichung, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Mechanism of electronic door lock
- Patent number 7,543,469
- Issue date Jun 9, 2009
- Sun-Castle Global Precision Technology Co., Ltd.
- Chung-Ming Tseng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES