TREA

Yasuhito Watanabe

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas insulated switchgear apparatus
    • Patent number 6,399,911
    • Issue date Jun 4, 2002
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switching apparatus
    • Patent number 6,278,073
    • Issue date Aug 21, 2001
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H01 - BASIC ELECTRIC ELEMENTS