Hans Groger

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Essen-Steele-Horst, DE

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Patents Grantslast 30 patents

Information Patent Grant
Cutter-loader apparatus having overhung shearer drum
- Patent number 4,445,724
- Issue date May 1, 1984
- Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
- Hans Groger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rack drive for a drum cutter mining machine
- Patent number 4,236,758
- Issue date Dec 2, 1980
- Gebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
- Hans Groger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drive gears for rack-driven mining machine
- Patent number 4,155,599
- Issue date May 22, 1979
- Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
- Hans Groger
- E21 - EARTH DRILLING MINING