Alfred Bollmann

Person

  • Bochum, DE

Patents Grantslast 30 patents

  • Information Patent Grant

    Walking prop for mine tunnels

    • Patent number 5,190,414
    • Issue date Mar 2, 1993
    • Strebtechnik Bochum GmbH & Co.
    • Hans-Ferdinand Bemmerl
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support

    • Patent number 4,309,131
    • Issue date Jan 5, 1982
    • Bochumer Eisenhutte Heintzmann GmbH & Co
    • Alfred Bollmann
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Arrangement for controlled engagement of the tools of a mining mach...

    • Patent number 4,280,734
    • Issue date Jul 28, 1981
    • Bochumer Eisenhuette Heintzmann GmbH & Co.
    • Gunter Blumenthal
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support

    • Patent number 4,252,477
    • Issue date Feb 24, 1981
    • Bochumer Eisenhutte Heintzmann GmbH & Co
    • Alfred Bollmann
    • E21 - EARTH DRILLING MINING