TREA

Yoshiyuki Hirahata

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  • Nagoya-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Collective housing intercom system
    • Patent number 7,792,259
    • Issue date Sep 7, 2010
    • Aiphone Co., Ltd.
    • Seiya Yamakawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Collective housing intercom system
    • Publication number 20070189483
    • Publication date Aug 16, 2007
    • Aiphone Co., Ltd.
    • Seiya Yamakawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE