TREA

Norman E. Harthun

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  • San Carlos, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas fired heater
    • Patent number 6,022,213
    • Issue date Feb 8, 2000
    • Paper Machinery Corporation
    • Norman E. Harthun
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Method of operating a wall fired duct heater
    • Patent number 4,462,795
    • Issue date Jul 31, 1984
    • Coen Company, Inc.
    • Ralph R. Vosper
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Wall fired duct heater
    • Patent number 4,375,952
    • Issue date Mar 8, 1983
    • Coen Company, Inc.
    • Ralph R. Vosper
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Energy saving fuel oil atomizer
    • Patent number 4,356,970
    • Issue date Nov 2, 1982
    • Coen Company, Inc.
    • Ralph R. Vosper
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Parallel flow burner
    • Patent number 4,303,386
    • Issue date Dec 1, 1981
    • Coen Company, Inc.
    • Temple S. Voorheis
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Wall fired duct heater
    • Patent number 4,286,945
    • Issue date Sep 1, 1981
    • Coen Company, Inc.
    • Ralph R. Vosper
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Self contained compact burner
    • Patent number 4,230,449
    • Issue date Oct 28, 1980
    • Coen Company
    • Chester S. Binasik
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Back flow preventer valve
    • Patent number 4,159,025
    • Issue date Jun 26, 1979
    • Smith; Telford L.
    • Norman E. Harthun
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Combination surge relief and back flow prevention valve
    • Patent number 3,982,561
    • Issue date Sep 28, 1976
    • Telford Smith, Inc.
    • Norman Edward Harthun
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...