John Hallworth

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Clifton, GB

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Patents Grantslast 30 patents

Information Patent Grant
Rotary steerable devices and methods of use
- Patent number 7,980,328
- Issue date Jul 19, 2011
- Schlumberger Technology Corporation
- John Hallworth
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ROTARY STEERABLE DEVICES AND METHODS OF USE
- Publication number 20100139983
- Publication date Jun 10, 2010
- SCHLUMBERGER TECHNOLOGY CORPORATION
- John Hallworth
- E21 - EARTH DRILLING MINING