Gerhard Schoonderbeek

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Stavanger, NO

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Patents Grantslast 30 patents

Information Patent Grant
Gun brake device
- Patent number 6,817,598
- Issue date Nov 16, 2004
- Schlumberger Technology Corporation
- Robert A. Parrott
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Gun brake device
- Publication number 20030089504
- Publication date May 15, 2003
- Robert A. Parrott
- E21 - EARTH DRILLING MINING