TREA

Mark W. Porter

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  • Altoona, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tapered C-spring for a disk harrow
    • Patent number 5,042,590
    • Issue date Aug 27, 1991
    • Deere & Company
    • Bierl James F.
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Cotton harvester with an offset head
    • Patent number 4,255,919
    • Issue date Mar 17, 1981
    • Deere & Company
    • Russell D. Copley
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING