Inventor
RUSSELL MICHAEL K
GB24 patents
⚠️ This page may combine multiple inventors who share the name “RUSSELL MICHAEL K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NL INDUSTRIES INC
6 patentsUS4756088AJul 12, 1988
Instruments for monitoring the direction of a borehole
NL INDUSTRIES INC40 citations92
US4675852AJun 23, 1987
Apparatus for signalling within a borehole while drilling
NL INDUSTRIES INC48 citations92
US4725197AFeb 16, 1988
Devices for imparting rotary motion
NL INDUSTRIES INC27 citations90
US4694555ASep 22, 1987
Assemblies for supporting electrical circuit boards within tubes and method of using same
NL INDUSTRIES INC23 citations78
US4855870AAug 8, 1989
Assemblies for supporting electrical circuit boards within tubes
NL INDUSTRIES INC14 citations70
US4714403ADec 22, 1987
Down-hole devices for imparting rotary motion
NL INDUSTRIES INC5 citations60
SPERRY SUN INC
4 patentsUS4535429AAug 13, 1985
Apparatus for signalling within a borehole while drilling
SPERRY SUN INC61 citations96
US4802150AJan 31, 1989
Mud pressure control system with magnetic torque transfer
SPERRY SUN INC37 citations92
US4636995AJan 13, 1987
Mud pressure control system
SPERRY SUN INC9 citations73
US4507958AApr 2, 1985
Surveying of a borehole for position determination
SPERRY SUN INC17 citations73
RUSSELL ANTHONY W
3 patentsUS4163324AAug 7, 1979
Surveying of boreholes
RUSSELL ANTHONY W64 citations95
US5103177AApr 7, 1992
Method and apparatus for determining the azimuth of a borehole by deriving the magnitude of the terrestial magnetic field bze
RUSSELL ANTHONY W28 citations91
US4999920AMar 19, 1991
Surveying of boreholes
RUSSELL ANTHONY W19 citations72