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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for controlling precession in a drilling assembly
- Patent number 7,798,253
- Issue date Sep 21, 2010
- Validus
- Frank J. Schuh
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING PRECESSION IN A DRILLING ASSEMBLY
- Publication number 20090000826
- Publication date Jan 1, 2009
- Validus
- Frank J. Schuh
- E21 - EARTH DRILLING MINING
Information Patent Application
Method and apparatus for preventing the friction induced rotation o...
- Publication number 20050150694
- Publication date Jul 14, 2005
- VALIDUS
- Frank J. Schuh
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR DETERMINING DRILLING PATHS TO DIRECTIONAL...
- Publication number 20030024738
- Publication date Feb 6, 2003
- VALIDUS
- Frank J. Schuh
- E21 - EARTH DRILLING MINING

Trademarklast 30 trademarks