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Douglas F. McFarland

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  • Davis City, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic transmission with coaxial power-take-off and motor shafts
    • Patent number 4,773,220
    • Issue date Sep 27, 1988
    • Douglas F. McFarland
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Multiple barrel gun
    • Patent number 4,757,740
    • Issue date Jul 19, 1988
    • Douglas F. McFarland
    • F41 - WEAPONS
  • Information Patent Grant

    Horsepower and fuel consumption gauge
    • Patent number 4,557,140
    • Issue date Dec 10, 1985
    • Douglas F. McFarland
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Wind power generator
    • Patent number 4,278,896
    • Issue date Jul 14, 1981
    • Douglas F. McFarland
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Governor control device
    • Patent number 4,237,834
    • Issue date Dec 9, 1980
    • Douglas F. McFarland
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Inertia controlled conveyor clutch
    • Patent number 4,164,995
    • Issue date Aug 21, 1979
    • Douglas F. McFarland
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Round bale loading and unrolling machine
    • Patent number 4,084,707
    • Issue date Apr 18, 1978
    • Douglas McFarland
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Self-loading and unloading hay bale trailer
    • Patent number 4,042,140
    • Issue date Aug 16, 1977
    • Farmhand, Inc.
    • Douglas F. McFarland
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Speed responsive fluid coupling and clutch
    • Patent number 4,037,692
    • Issue date Jul 26, 1977
    • Douglas F. McFarland
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...