TREA

Barbara J. Smith

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  • Tucson, AZ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Removable operator for gate valves
    • Patent number 4,231,389
    • Issue date Nov 4, 1980
    • New Concepts, Inc.
    • Robert C. Still
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...