Ernst-Gunter Nerlich

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Essen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Electrohydraulic coal-mining system
- Patent number 4,900,091
- Issue date Feb 13, 1990
- Bochumer Eisenhutte Heintzmann GmbH & Co. KG
- Gustav Neu
- 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
Hydraulic control arrangement
- Patent number 4,586,424
- Issue date May 6, 1986
- Bochumer Eisenhutte Heintzmann GmbH & Co. KG
- Ernst-Gunter Nerlich
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulically operated mine roof support and a control arrangement...
- Patent number 4,225,271
- Issue date Sep 30, 1980
- Bochmer Eisennuette Heintzmann GmbH
- Ernst-Gunter Nerlich
- E21 - EARTH DRILLING MINING
Information Patent Grant
Valve arrangement for a walking mine roof support
- Patent number 4,220,424
- Issue date Sep 2, 1980
- Bochumer Eisenhutte Heintzmann GmbH & Co
- Ernst-Gunter Nerlich
- E21 - EARTH DRILLING MINING