TREA

Cheng-Che Tsai

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  • Yung Kang City, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combination lock
    • Patent number 6,845,643
    • Issue date Jan 25, 2005
    • Cheng-Che Tsai
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    Combination lock
    • Publication number 20040134243
    • Publication date Jul 15, 2004
    • Cheng-Che Tsai
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    Combination lock
    • Publication number 20040079122
    • Publication date Apr 29, 2004
    • Cheng-Che Tsai
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES