TREA

Mark A. Ruhl

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  • Baltimore, MD, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Metering pump
    • Patent number 5,154,589
    • Issue date Oct 13, 1992
    • National Instrument Company
    • Mark A. Ruhl
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...