TREA

Masamitsu Tsukatani

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Operating panel
    • Patent number 4,613,736
    • Issue date Sep 23, 1986
    • Sony Corporation
    • Hajime Shichijo
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Tuning apparatus
    • Patent number 4,184,447
    • Issue date Jan 22, 1980
    • Sony Corporation
    • Hajime Shichijo
    • H03 - BASIC ELECTRONIC CIRCUITRY