Inventor
MURDOCK ANDREW
GB14 patents
⚠️ This page may combine multiple inventors who share the name “MURDOCK ANDREW”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAMCO INT UK LTD
6 patentsUS6142250ANov 7, 2000
Rotary drill bit having moveable formation-engaging members
CAMCO INT UK LTD207 citations98
US6098726AAug 8, 2000
Torque transmitting device for rotary drill bits
CAMCO INT UK LTD68 citations94
US6151960ANov 28, 2000
Method of determining characteristics of a rotary drag-type drill bit
CAMCO INT UK LTD26 citations92
US5944128AAug 31, 1999
Matrix hard facing by lost wax process
CAMCO INT UK LTD28 citations92
US6089336AJul 18, 2000
Rotary drill bits
CAMCO INT UK LTD47 citations88
US6164390ADec 26, 2000
Method of determining characteristics of a rotary drag-type drill bit
CAMCO INT UK LTD7 citations70
CAMCO DRILLING GROUP LTD
5 patentsUS5732783AMar 31, 1998
In or relating to rotary drill bits
CAMCO DRILLING GROUP LTD145 citations98
US5651421AJul 29, 1997
Rotary drill bits
CAMCO DRILLING GROUP LTD125 citations97
US5649604AJul 22, 1997
Rotary drill bits
CAMCO DRILLING GROUP LTD95 citations96
US5829539ANov 3, 1998
Rotary drill bit with hardfaced fluid passages and method of manufacturing
CAMCO DRILLING GROUP LTD95 citations95
US5671818ASep 30, 1997
Rotary drill bits
CAMCO DRILLING GROUP LTD25 citations92