TREA

Masao Okano

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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve handle
    • Patent number D252340
    • Issue date Jul 10, 1979
    • Toyo Valve Co., Ltd.
    • Masao Okano
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Valve handle
    • Patent number D252339
    • Issue date Jul 10, 1979
    • Toyo Valve Co., Ltd.
    • Masao Okano
    • D23 - Environmental heating and cooling