TREA

Rudolf Barmann

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  • Wuppertal, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Prop head bearing
    • Patent number 7,201,541
    • Issue date Apr 10, 2007
    • DBT GmbH
    • Rudolf Barmann
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Prop head bearing
    • Publication number 20060024138
    • Publication date Feb 2, 2006
    • Rudolf Barmann
    • E21 - EARTH DRILLING MINING