TREA

Chung-Tang Hsu

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  • Taipei Hsien, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combination lock
    • Patent number 5,839,301
    • Issue date Nov 24, 1998
    • Chung-Tung Hsu
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Combination lock device
    • Patent number 5,661,991
    • Issue date Sep 2, 1997
    • Chung-Tang Hsu
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Combination lock with latch bolt
    • Patent number 5,638,708
    • Issue date Jun 17, 1997
    • Chung-Tang Hsu
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES