Andrew Pilgrim

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Provo, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole drive shaft connection
- Patent number 7,900,720
- Issue date Mar 8, 2011
- Schlumberger Technology Corporation
- David R. Hall
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Downhole Drive Shaft Connection
- Publication number 20090152011
- Publication date Jun 18, 2009
- David R. Hall
- E21 - EARTH DRILLING MINING