TREA

Ralph F. Gessner Jr.

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  • Cincinnati, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Selector valve
    • Patent number 5,653,261
    • Issue date Aug 5, 1997
    • Hydro Systems Company
    • Mark D. Dalhart
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...