TREA

Hans-Ferdinand Bemmerl

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  • Hern, DT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mine roof support
    • Patent number 4,094,155
    • Issue date Jun 13, 1978
    • Bochumer Eisenhutte Heintzmann GmbH & Co.
    • Gunter Blumenthal
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Guiding arrangement for underground excavating systems
    • Patent number 4,065,931
    • Issue date Jan 3, 1978
    • Bochumer Eisenhutte Heintzmann GmbH & Co.
    • Gustav Neu
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pit prop assembly
    • Patent number 4,028,898
    • Issue date Jun 14, 1977
    • Bochumer Eisenhutte Heintzmann & Company
    • Gunter Blumenthal
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic pit prop
    • Patent number 3,992,888
    • Issue date Nov 23, 1976
    • Bochumer Eisenhutte Heintzmann & Company
    • Hans-Ferdinand Bemmerl
    • E21 - EARTH DRILLING MINING