TREA

Peter L. Ruzzi

Follow

Person

  • Eagan, MN, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Shotgun cartridge rock breaker
    • Patent number 5,474,364
    • Issue date Dec 12, 1995
    • The United States of America as represented by the Secretary of the Interior
    • Peter L. Ruzzi
    • F42 - AMMUNITION BLASTING
  • Information Patent Grant

    Double acting bit holder
    • Patent number 5,335,977
    • Issue date Aug 9, 1994
    • The United States of America as represented by the Secretary of the Interior
    • Roger J. Morrell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Impact assisted segmented cutterhead
    • Patent number 5,123,710
    • Issue date Jun 23, 1992
    • The United States of America as represented by the Secretary of the Interior
    • Roger J. Morrell
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING