John D. Nelson

Person

  • Fort Collins, CO, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Retaining wall system using soil arching

    • Patent number 4,668,129
    • Issue date May 26, 1987
    • Stresswall International Incorporated
    • John W. Babcock
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES