TREA

Hartley Ellingson

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  • Wahpeton, ND, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Roll-tight tarp system
    • Patent number 4,691,957
    • Issue date Sep 8, 1987
    • Frontier, Inc.
    • Hartley Ellingson
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Vacuum grain moving apparatus
    • Patent number 4,344,723
    • Issue date Aug 17, 1982
    • Frontier, Inc.
    • Hartley Ellingson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL