TREA

Ching-Tien Tsai

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  • Tainan, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lock mechanism structure
    • Patent number 5,950,461
    • Issue date Sep 14, 1999
    • Ching-Tien Tsai
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Safety lock-set
    • Patent number 5,802,896
    • Issue date Sep 8, 1998
    • Ching-Tien Tsai
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES