TREA

Derek Litchfield

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  • Macomb, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Crop debris clearing disc
    • Patent number D987693
    • Issue date May 30, 2023
    • Yetter Manufacturing Company
    • Derek Allensworth
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Seed furrow closing wheel
    • Patent number 10,462,959
    • Issue date Nov 5, 2019
    • Yetter Manufacturing Company
    • Patrick T. Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Seed furrow closing wheel
    • Patent number D801396
    • Issue date Oct 31, 2017
    • Yetter Manufacturing Company
    • Patrick T. Whalen
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Implement height adjuster
    • Patent number 8,752,642
    • Issue date Jun 17, 2014
    • Yetter Manufacturing Company
    • Patrick Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Cast closing wheel
    • Patent number D663326
    • Issue date Jul 10, 2012
    • Yatter Manufacturing Company
    • Derek Allensworth
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Crop debris clearing device
    • Patent number 7,832,345
    • Issue date Nov 16, 2010
    • Yetter Manufacturing Company
    • Patrick Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Crop debris clearing device
    • Patent number 7,240,627
    • Issue date Jul 10, 2007
    • Yetter Manufacturing Company
    • Patrick Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents

  • Information Patent Application

    CROP DEBRIS CLEARING SYSTEM
    • Publication number 20240251693
    • Publication date Aug 1, 2024
    • YETTER MANUFACTURING COMPANY
    • Derek W. ALLENSWORTH
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    ADJUSTABLE FURROW CLOSING ASSEMBLY
    • Publication number 20230165180
    • Publication date Jun 1, 2023
    • YETTER MANUFACTURING COMPANY
    • Derek W. ALLENSWORTH
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    SEED FURROW CLOSING WHEEL
    • Publication number 20180014454
    • Publication date Jan 18, 2018
    • YETTER MANUFACTURING COMPANY
    • Patrick T. WHALEN
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    Implement Height Adjuster
    • Publication number 20110247843
    • Publication date Oct 13, 2011
    • Patrick Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    Fertilizer Coulter With Self Sealing Knife
    • Publication number 20080314301
    • Publication date Dec 25, 2008
    • Patrick Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    Crop Debris Clearing Device
    • Publication number 20070131153
    • Publication date Jun 14, 2007
    • YETTER MANUFACTURING COMPANY
    • Patrick Whalen
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING