TREA

Sadao Isozaki

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone set
    • Patent number D323827
    • Issue date Feb 11, 1992
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone instrument set
    • Patent number D320797
    • Issue date Oct 15, 1991
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Direct station telephone selector
    • Patent number D315564
    • Issue date Mar 19, 1991
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone apparatus
    • Patent number D313235
    • Issue date Dec 25, 1990
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone
    • Patent number D310076
    • Issue date Aug 21, 1990
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Attendant telephone switchboard
    • Patent number D304564
    • Issue date Nov 14, 1989
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Direct station telephone selector
    • Patent number D303801
    • Issue date Oct 3, 1989
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Direct station telephone selector stand
    • Patent number D300029
    • Issue date Feb 28, 1989
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone apparatus with speakerphone and display panel
    • Patent number D299134
    • Issue date Dec 27, 1988
    • Meisei Electric Co., Ltd.
    • Shigeaki Kido
    • D14 - Recording, communication, or information retrieval equipment