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Etsuo Mayumi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Miniature motor having a built-up commutator
    • Patent number 5,272,404
    • Issue date Dec 21, 1993
    • Mabuchi Motor, Co., Ltd.
    • Toshiya Yuhi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Miniature motor
    • Patent number 4,853,576
    • Issue date Aug 1, 1989
    • Mabuchi Motor Co., Ltd.
    • Etsuo Mayumi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Miniature motor
    • Patent number 4,806,811
    • Issue date Feb 21, 1989
    • Mabuchi Motor Co. Ltd.
    • Etsuo Mayumi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER