TREA

John G. Graves

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  • Tulsa, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combination ball and check valve
    • Patent number 5,551,479
    • Issue date Sep 3, 1996
    • John G. Graves
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Internal combustion engine
    • Patent number 5,161,491
    • Issue date Nov 10, 1992
    • John G. Graves
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Water gun
    • Patent number 5,052,587
    • Issue date Oct 1, 1991
    • John G. Graves
    • F41 - WEAPONS
  • Information Patent Grant

    Combination valve
    • Patent number 5,004,005
    • Issue date Apr 2, 1991
    • John G. Graves
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Reversible flow check valve
    • Patent number 4,969,484
    • Issue date Nov 13, 1990
    • John G. Graves
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotatably driven positive displacement pump
    • Patent number 4,960,369
    • Issue date Oct 2, 1990
    • John G. Graves
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Combination plug and two-way check valve
    • Patent number 4,928,725
    • Issue date May 29, 1990
    • John G. Graves
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...