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John H. Thomas

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  • Pittsburgh, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pneumatic shut-off valve
    • Patent number 4,526,341
    • Issue date Jul 2, 1985
    • Kerotest Manufacturing Corp.
    • John H. Thomas
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Metering valve
    • Patent number 4,513,779
    • Issue date Apr 30, 1985
    • Kerotest Manufacturing Corp.
    • James R. Owoc
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe stopper method and apparatus
    • Patent number 4,369,813
    • Issue date Jan 25, 1983
    • Kerotest Manufacturing Corp.
    • John H. Thomas
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...