TREA

Hajime Arai

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Screw fluid machine
    • Patent number 4,174,196
    • Issue date Nov 13, 1979
    • Hitachi, Ltd.
    • Hidetomo Mori
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...