TREA

Sanner Contracting Co.

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  • Phoenix, AZ, US
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  • Information Patent Grant

    Elevating earth scraper
    • Patent number 4,294,026
    • Issue date Oct 13, 1981
    • Sanner Contracting Co.
    • James A. Welch
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

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