TREA

Mark D. Stiehl

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  • Marshalltown, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Volume booster with stabilized trim
    • Patent number 8,631,826
    • Issue date Jan 21, 2014
    • Fisher Controls International LLC
    • Michel K. Lovell
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Control valve with retained pin for easy valve trim maintenance
    • Patent number 6,991,218
    • Issue date Jan 31, 2006
    • Fisher Controls International LLC
    • Michel K. Lovell
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Control valve flow adjustment device
    • Patent number 6,905,108
    • Issue date Jun 14, 2005
    • Fisher Controls International LLC
    • Randy J. Hall
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Replaceable valve seat ring with enhanced flow design
    • Patent number 6,698,449
    • Issue date Mar 2, 2004
    • Fisher Controls International LLC
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Control valve pressure bleed inspection port
    • Patent number 6,695,000
    • Issue date Feb 24, 2004
    • Fisher Controls International LLC
    • Randy Jerold Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents