TREA

Toshio Suyama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Butterfly valve
    • Patent number 4,604,254
    • Issue date Aug 5, 1986
    • Hitachi Zosen Corporation and Jujikin International, Inc.
    • Masahiko Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...