TREA

Research by Copperhead Hill, Inc.

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  • Kingsbury, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve adapter
    • Patent number 7,168,450
    • Issue date Jan 30, 2007
    • Research by Copperhead Hill, Inc.
    • Robert D. Dulin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Temperature actuated valve
    • Patent number 6,892,747
    • Issue date May 17, 2005
    • Research by Copperhead Hill, Inc.
    • Robert D. Dulin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flow control valve
    • Patent number 6,644,345
    • Issue date Nov 11, 2003
    • Research by Copperhead Hill, Inc.
    • Robert Dulin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Temperature activated valve
    • Patent number 6,530,391
    • Issue date Mar 11, 2003
    • Research by Copperhead Hill, Inc.
    • Robert D. Dulin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flow control valve
    • Patent number 6,408,870
    • Issue date Jun 25, 2002
    • Research by Copperhead Hill, Inc.
    • Robert D. Dulin
    • G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

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