TREA

Keiji Wakamatsu

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  • Chofu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Suspension-type line arrester
    • Patent number 5,216,570
    • Issue date Jun 1, 1993
    • Tokyo Electric Power Co., Inc.
    • Tsuruo Yorozuya
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Lightning-conducting insulators
    • Patent number 4,761,707
    • Issue date Aug 2, 1988
    • The Tokyo Electric Co., Inc.
    • Keiji Wakamatsu
    • H01 - BASIC ELECTRIC ELEMENTS