TREA

OCHARAKU CO. LTD.

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Organization

  • Tokyo, JP
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Twin driver earphone
    • Patent number 8,660,288
    • Issue date Feb 25, 2014
    • Ocharaku Co. Ltd.
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    TWIN DRIVER EARPHONE
    • Publication number 20130266170
    • Publication date Oct 10, 2013
    • OCHARAKU CO. LTD.
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE