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Robert H. Welker

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  • Bellaire, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Resilient plug construction for a flow regulator incorporating stre...
    • Patent number 4,830,334
    • Issue date May 16, 1989
    • Robert H. Welker
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Constant velocity diffuser
    • Patent number 4,354,661
    • Issue date Oct 19, 1982
    • Robert H. Welker
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flow regulator assembly
    • Patent number 4,351,510
    • Issue date Sep 28, 1982
    • Robert H. Welker
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dump valve
    • Patent number 4,315,616
    • Issue date Feb 16, 1982
    • Robert H. Welker
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    High pressure pump
    • Patent number 3,945,770
    • Issue date Mar 23, 1976
    • Robert H. Welker
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES