Todd M. Ruff

Person

  • Deer Park, WA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Ore pass level and blockage locator device

    • Patent number 6,173,618
    • Issue date Jan 16, 2001
    • The United States of America as represented by the Department of Health and H...
    • Todd M. Ruff
    • E21 - EARTH DRILLING MINING