David M. Donovan

Person

  • New Orleans, LA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Spill oil containment system

    • Patent number 4,348,136
    • Issue date Sep 7, 1982
    • Waldemar S. Nelson & Co.
    • David M. Donovan
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING