TREA

Takao Itoh

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  • Tachikawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Audio disc player
    • Patent number D291689
    • Issue date Sep 1, 1987
    • Hitachi, Ltd.
    • Kazuhiko Nishiyama
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Audio disc player
    • Patent number D289947
    • Issue date May 26, 1987
    • Hitachi, Ltd.
    • Fumihito Katou
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Audio disc player
    • Patent number D286041
    • Issue date Oct 7, 1986
    • Hitachi, Ltd.
    • Kazuhiko Hiraoka
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Combined amplifier and tuner
    • Patent number D269615
    • Issue date Jul 5, 1983
    • Hitachi, Ltd.
    • Kazuhiko Nishiyama
    • D14 - Recording, communication, or information retrieval equipment