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Sadanori Hirano

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  • Fukuoka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sealing device for oil rotary vacuum pump
    • Patent number 5,022,836
    • Issue date Jun 11, 1991
    • Mitsubishi Denki Kabushiki Kaisha
    • Kiyonori Tokumitsu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...