TREA

JOHN DU

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  • ROCKFORD, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Balanced plug valve with contour wall
    • Patent number 6,394,135
    • Issue date May 28, 2002
    • Barber Colman
    • Irving Erickson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    BALANCED PLUG VALVE WITH CONTOUR WALL
    • Publication number 20010001964
    • Publication date May 31, 2001
    • MARK JOY
    • IRVING ERICKSON
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...