Melchior Jais

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Aresing, DE

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Patents Grantslast 30 patents

Information Patent Grant
Kelly bar arrangement
- Patent number 8,246,474
- Issue date Aug 21, 2012
- Bauer Maschinen GmbH
- Karl Johannes Krollmann
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
KELLY BAR ARRANGEMENT
- Publication number 20110105235
- Publication date May 5, 2011
- Bauer Maschinen GmbH
- Karl Johannes Krollmann
- E21 - EARTH DRILLING MINING