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Inventor
COLEBROOK MARK A
GB
2 patents
⚠️ This page may combine multiple inventors who share the name “COLEBROOK MARK A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAMCO DRILLING GROUP LTD
1 patent
US5603385A
Feb 18, 1997
Rotatable pressure seal
CAMCO DRILLING GROUP LTD
174 citations
93
SCHLUMBERGER WCP LTD
1 patent
US6962214B2
Nov 8, 2005
Rotary seal for directional drilling tools
SCHLUMBERGER WCP LTD
48 citations
89