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Bethold A. Fehn

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  • Krefeld, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sludge pump with monitoring system
    • Patent number 5,388,965
    • Issue date Feb 14, 1995
    • Friedrich Wilhelm Schwing GmbH
    • Bethold A. Fehn
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...