TREA

Kouichi Tomatsuri

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  • Katsuta, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tape recorder
    • Patent number 4,422,108
    • Issue date Dec 20, 1983
    • Hitachi, Ltd.
    • Tohru Sampei
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Gain control circuit
    • Patent number 4,134,078
    • Issue date Jan 9, 1979
    • Hitachi, Ltd.
    • Takao Arai
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Gain control circuit
    • Patent number 4,101,841
    • Issue date Jul 18, 1978
    • Hitachi, Ltd.
    • Shigeru Okada
    • H03 - BASIC ELECTRONIC CIRCUITRY