Mark A. Colebrook

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Cheltenham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Rotary seal for directional drilling tools
- Patent number 6,962,214
- Issue date Nov 8, 2005
- Schlumberger WCP LTD
- Peter Raymond Hughes
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Downhole unit for use in boreholes in a subsurface formation
- Patent number 5,971,085
- Issue date Oct 26, 1999
- Camco International (UK) Limited
- Mark Colebrook
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotatable pressure seal
- Patent number 5,603,385
- Issue date Feb 18, 1997
- Camco Drilling Group Limited
- Mark A. Colebrook
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Rotary seal for directional drilling tools
- Publication number 20020139584
- Publication date Oct 3, 2002
- Peter Raymond Hughes
- B22 - CASTING POWDER METALLURGY