TREA

Walter A. Clifford

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  • Tampa, FL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ported gate valves, method and apparatus
    • Patent number 5,137,261
    • Issue date Aug 11, 1992
    • Walter A. Clifford
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Safety valves
    • Patent number 4,962,785
    • Issue date Oct 16, 1990
    • Walter A. Clifford
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ported gate valve
    • Patent number 4,765,361
    • Issue date Aug 23, 1988
    • Walter A. Clifford
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...