TREA

Zirger; Herschel E.

Follow

Organization

  • Conroe, TX, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Releasable overshot
    • Patent number 5,054,833
    • Issue date Oct 8, 1991
    • Zirger; Herschel E.
    • Thomas R. Bishop
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks