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Ronald George Friend

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  • Franklin, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pressure relief valve monitoring device
    • Patent number 6,283,138
    • Issue date Sep 4, 2001
    • Anderson, Greenwood LP
    • Ronald George Friend
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pressure responsive pilot valve
    • Patent number 4,384,590
    • Issue date May 24, 1983
    • Crosby Valve & Gage Company
    • Ronald G. Friend
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Pressure relief valve monitoring device
    • Publication number 20020029808
    • Publication date Mar 14, 2002
    • Anderson Greenwood, LP
    • Ronald George Friend
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...