TREA

David A. Berg

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  • Milwaukee, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ball joint assembly for draft arm
    • Patent number 4,466,631
    • Issue date Aug 21, 1984
    • Allis-Chalmers Corporation
    • David A. Berg
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Top mounted lift ram for tractor
    • Patent number 4,357,031
    • Issue date Nov 2, 1982
    • Allis-Chalmers Corporation
    • David A. Berg
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Draft arm extension stop
    • Patent number 4,221,399
    • Issue date Sep 9, 1980
    • Allis-Chalmers Corporation
    • David A. Berg
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Adjustable lift link for a three-point hitch
    • Patent number 4,194,757
    • Issue date Mar 25, 1980
    • Allis-Chalmers Corporation
    • James H. Lucas
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Torsion bar draft load limit and preload adjuster
    • Patent number 4,185,697
    • Issue date Jan 29, 1980
    • Allis-Chalmers Corporation
    • David A. Berg
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Hydraulic filter and valve arrangement
    • Patent number 4,126,553
    • Issue date Nov 21, 1978
    • Allis-Chalmers Corporation
    • David A. Berg
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Reversible sway limiting blocks for a tractor hitch
    • Patent number 4,116,458
    • Issue date Sep 26, 1978
    • Allis-Chalmers Corporation
    • David A. Berg
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING