TREA

Der-Yuh Chern

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  • Pintung City, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Door handle
    • Patent number 8,172,284
    • Issue date May 8, 2012
    • Der-Yuh Chern
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Locking device
    • Patent number 7,849,719
    • Issue date Dec 14, 2010
    • Der-Yuh Chern
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    DOOR HANDLE
    • Publication number 20100253100
    • Publication date Oct 7, 2010
    • DER-YUH CHERN
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    LOCKING DEVICE
    • Publication number 20090241612
    • Publication date Oct 1, 2009
    • Der-Yuh Chern
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES