Georg Hurtz

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Erkelenz, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for modifying the cross-sectional profile of a...
- Patent number 4,696,600
- Issue date Sep 29, 1987
- Wirth Maschinen-und Bohrgerate-Fabrik GmbH
- Georg Hurtz
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for sinking boreholes
- Patent number 4,548,282
- Issue date Oct 22, 1985
- Wirth Maschinen-und Bohrgerate-Fabrik GmbH
- Georg Hurtz
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for producing a drill hole
- Patent number 4,396,072
- Issue date Aug 2, 1983
- Wirth Maschinen-und Bohrgerate-Fabrik GmbH
- Georg Hurtz
- E21 - EARTH DRILLING MINING