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Friedhelm Henrich

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  • Bochum-Weitmar, DT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drum cutter
    • Patent number 4,085,974
    • Issue date Apr 25, 1978
    • Gebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
    • Willy Lanfermann
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drum coal cutting machine having a roller crusher
    • Patent number 3,945,680
    • Issue date Mar 23, 1976
    • Gebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
    • Friedhelm Henrich
    • E21 - EARTH DRILLING MINING