Donald E. Williams

Person

  • Oxnard, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Mine clearing apparatus

    • Patent number 4,938,114
    • Issue date Jul 3, 1990
    • The United States of America as represented by the Secretary of the Navy
    • John D. Matthews
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING