TREA

Frederic E. Langford

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  • Redmond, WA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Track suspension system
    • Patent number 4,953,919
    • Issue date Sep 4, 1990
    • Phoenix Engineering, Inc.
    • Frederic E. Langford
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Tree feller-buncher
    • Patent number 4,823,852
    • Issue date Apr 25, 1989
    • Allied Systems Company
    • Frederic E. Langford
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Tree feller-buncher
    • Patent number 4,763,742
    • Issue date Aug 16, 1988
    • Allied Systems Company
    • Frederic E. Langford
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    System for inhauling and outhauling lines
    • Patent number 4,353,527
    • Issue date Oct 12, 1982
    • Washington Logging Equipment, Inc.
    • Frederic E. Langford
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    System for inhauling and outhauling lines
    • Patent number 4,295,636
    • Issue date Oct 20, 1981
    • Washington Logging Equipment, Inc.
    • Frederic E. Langford
    • B66 - HOISTING LIFTING HAULING