TREA

Virgil R. Mahlum

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  • Lake Park, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Soil sample taker
    • Patent number 5,931,236
    • Issue date Aug 3, 1999
    • CEE, L.L.C.
    • Virgil Mahlum
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Soil sampler
    • Patent number 5,435,399
    • Issue date Jul 25, 1995
    • Concord, Inc.
    • Gary G. Peterson
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING