TREA

Hidekiyo Mayama

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Puffer type gas-blast circuit breaker
    • Patent number 4,516,006
    • Issue date May 7, 1985
    • Tokyo Shibaura Denki Kabushiki Kaisha
    • Akio Kobayashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Direct current interrupter
    • Patent number 4,262,215
    • Issue date Apr 14, 1981
    • Tokyo Shibaura Denki Kabushiki Kaisha
    • Satoru Yanabu
    • H01 - BASIC ELECTRIC ELEMENTS