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  • FUKUSHIMA-KEN, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Repeating device
    • Patent number 7,436,944
    • Issue date Oct 14, 2008
    • Hitachi Communication Technologies, Ltd.
    • Takahiro Yoshida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Repeating device, telephone set, and recording medium
    • Patent number 7,149,301
    • Issue date Dec 12, 2006
    • Hitachi Communication Technologies, Ltd.
    • Takahiro Yoshida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

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