TREA

Tsuneharu Takagi

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Screw type vacuum pump
    • Patent number 4,714,418
    • Issue date Dec 22, 1987
    • Hitachi, Ltd.
    • Katsumi Matsubara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...