TREA

Gerald L. Knief

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  • Grundy Center, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Animal waterer
    • Patent number 4,646,687
    • Issue date Mar 3, 1987
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Waterer corner wear guard
    • Patent number 4,633,815
    • Issue date Jan 6, 1987
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Animal waterer with recirculating water system
    • Patent number 4,248,177
    • Issue date Feb 3, 1981
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Animal waterer
    • Patent number D257691
    • Issue date Dec 23, 1980
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • D30 - Animal husbandry
  • Information Patent Grant

    Method and apparatus for heating a nipple valve livestock waterer
    • Patent number 4,185,589
    • Issue date Jan 29, 1980
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Plastic pipe heater
    • Patent number 4,110,603
    • Issue date Aug 29, 1978
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Animal watering apparatus
    • Patent number 4,078,524
    • Issue date Mar 14, 1978
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Valve
    • Patent number 4,014,365
    • Issue date Mar 29, 1977
    • Ritchie Industries, Inc.
    • Jerry D. Peterson
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING