William C. Motion

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Prestbury, GB

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Patents Grantslast 30 patents

Information Patent Grant
Steerable rotary drilling systems
- Patent number 6,089,332
- Issue date Jul 18, 2000
- Camco International (UK) Limited
- John D. Barr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Steerable rotary drilling systems and method of operating such systems
- Patent number 5,803,185
- Issue date Sep 8, 1998
- Camco Drilling Group Limited of Hycalog
- John D. Barr
- E21 - EARTH DRILLING MINING
Information Patent Grant
System and method of controlling rotation of a downhole instrument...
- Patent number 5,695,015
- Issue date Dec 9, 1997
- Camco Drilling Group Ltd. of Hycalog
- John D. Barr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of operating a steerable rotary drilling system
- Patent number 5,685,379
- Issue date Nov 11, 1997
- Camco Drilling Group Ltd. of Hycalog
- John D. Barr
- E21 - EARTH DRILLING MINING