Chou-Shiang Tzen

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Ta Li City, Taichung Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Door damper
- Patent number 5,787,548
- Issue date Aug 4, 1998
- Chou-Shiang Tzen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES