TREA

Shoichi Ishikawa

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  • Yokohama, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multiple-contact type W-N gear
    • Patent number 4,051,745
    • Issue date Oct 4, 1977
    • Kabushiki Kaisha Hasegawa Haguruma
    • Shoichi Ishikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dual tooth contact type W-N gear
    • Patent number 4,031,770
    • Issue date Jun 28, 1977
    • Kabushiki Kaisha Hasegawa Haguruma
    • Shoichi Ishikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...