TREA

Michael A. Karr Jr.

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fail-safe valve actuator
    • Patent number 4,643,390
    • Issue date Feb 17, 1987
    • Gray Tool Company
    • Michael A. Karr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fire resistant valve
    • Patent number 4,570,659
    • Issue date Feb 18, 1986
    • Gray Tool Company
    • Michael A. Karr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve with remote and manual actuation means
    • Patent number 4,569,503
    • Issue date Feb 11, 1986
    • Gray Tool Company
    • Michael A. Karr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotary stepper actuator
    • Patent number 4,534,235
    • Issue date Aug 13, 1985
    • Gray Tool Company
    • John P. Mitcham
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fire resistant connections embodying heat transfer means
    • Patent number 4,477,085
    • Issue date Oct 16, 1984
    • Gray Tool
    • Charles D. Bridges
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Temperature resistant joint packing with E-shaped spring seal
    • Patent number 4,452,462
    • Issue date Jun 5, 1984
    • Gray Tool Company
    • Michael A. Karr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid seal
    • Patent number 4,436,316
    • Issue date Mar 13, 1984
    • Michael A. Karr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Throttling and shut-off valve
    • Patent number 3,952,994
    • Issue date Apr 27, 1976
    • Michael A. Karr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...