Chung Yun-Sheng

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Dah Lii Country, Taichung Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Card-operated lock
- Patent number 5,146,770
- Issue date Sep 15, 1992
- Chung Yun-Sheng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES