Kalman Kovari

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Zurich, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for stabilizing a cavity excavated in underground...
- Patent number 7,404,694
- Issue date Jul 29, 2008
- Kalman Kovári
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Method and device for stabilizing a cavity excavated in underground...
- Publication number 20050191138
- Publication date Sep 1, 2005
- Kalman Kovari
- E21 - EARTH DRILLING MINING