TREA

John F. Duvall

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  • Buffalo, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydrocyclone construction
    • Patent number 4,793,925
    • Issue date Dec 27, 1988
    • A. R. Wilfley and Sons, Inc.
    • John F. Duvall
    • B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...