TREA

Larry G. Eftefield

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  • Edelstein, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Unitary frame structure
    • Patent number 5,894,908
    • Issue date Apr 20, 1999
    • Caterpillar Inc.
    • Larry G. Eftefield
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Booster recoil mechanism for endless track machine
    • Patent number 5,511,868
    • Issue date Apr 30, 1996
    • Caterpillar Inc.
    • Larry G. Eftefield
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Dampener for impacting mechanism
    • Patent number 4,867,253
    • Issue date Sep 19, 1989
    • Caterpillar Inc.
    • Larry G. Eftefield
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Method and apparatus for fragmenting asphalt
    • Patent number 4,560,207
    • Issue date Dec 24, 1985
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Tube expander
    • Patent number 4,397,173
    • Issue date Aug 9, 1983
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Weldment
    • Patent number 4,107,505
    • Issue date Aug 15, 1978
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Bulldozer blade push arms
    • Patent number 4,098,350
    • Issue date Jul 4, 1978
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Extended life end bits for bulldozer blades
    • Patent number 4,086,967
    • Issue date May 2, 1978
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Cushion compression struts for bulldozer blades
    • Patent number 4,074,896
    • Issue date Feb 21, 1978
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Reversible blade bit
    • Patent number 4,044,481
    • Issue date Aug 30, 1977
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Power scraper with apron on a movable pivot axis
    • Patent number 4,011,669
    • Issue date Mar 15, 1977
    • Caterpillar Tractor Co.
    • Ray H. Hahn
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Apron lift linkage
    • Patent number 4,009,530
    • Issue date Mar 1, 1977
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Weldment
    • Patent number 3,986,784
    • Issue date Oct 19, 1976
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Dual hydraulic motor drive system
    • Patent number 3,981,150
    • Issue date Sep 21, 1976
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Cellular bulldozer blade with built-in support brackets
    • Patent number 3,974,882
    • Issue date Aug 17, 1976
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Self-aligning trunnion bearing assembly
    • Patent number 3,964,803
    • Issue date Jun 22, 1976
    • Caterpillar Tractor Co.
    • Larry G. Eftefield
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING