TREA

Yasuo Tsumurai

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  • Higashi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric fan
    • Patent number D291486
    • Issue date Aug 18, 1987
    • Hitachi, Ltd.
    • Shuichi Kouno
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Electric fan
    • Patent number D290997
    • Issue date Jul 21, 1987
    • Hitachi, Ltd.
    • Toshiyuki Utsuki
    • D23 - Environmental heating and cooling