Hans-Ferdinand Bemmerl

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Herne, DE

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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
Adjustable cap unit
- Patent number 4,755,083
- Issue date Jul 5, 1988
- Bochumer Eisenhutte Heintzmann GmbH & Co. KG
- Ernst-Gunter Nerlich
- E21 - EARTH DRILLING MINING
Information Patent Grant
Travelling bracket
- Patent number 4,487,531
- Issue date Dec 11, 1984
- Bochumer Eisenh/u/ tte Heintzmann GmbH & Co. KG
- Ernst-G/u/ nter Nerlich
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof support
- Patent number 4,309,130
- Issue date Jan 5, 1982
- Bochumer Eisenhutte Heintzmann GmbH & Co
- Hans-Ferdinand Bemmerl
- E21 - EARTH DRILLING MINING
Information Patent Grant
Walking mine roof support
- Patent number 4,140,430
- Issue date Feb 20, 1979
- Bochumer Eisenhutte Heintzmann GmbH & Co
- Gunter Blumenthal
- E21 - EARTH DRILLING MINING