DLWD
Filed: January 8, 1981
Well Logging Services
Owned by: EXLOG, INC.
Serial Number: 73292226
DHVM
Filed: July 11, 1988
MEASURING DOWNHOLE VIBRATION OF A DRILLSTRING WHILE DRILLING A WELL
Owned by: EXLOG, INC.
Serial Number: 73739105
FCR
Filed: December 5, 1988
WELL LOGGING, NAMELY, MEASURING ELECTRICAL RESISTIVITY OF UNDERGROUND FORMATIONS
Owned by: EXLOG, INC.
Serial Number: 73767652
EMR
Filed: December 5, 1988
ELECTRICAL WELL LOGGING, NAMELY, MEASURING RESISTIVITY OF UNDERGROUND FORMATIONS AND CALCULATING MOVABLE HYDROCARBONS IN…
Owned by: EXLOG, INC.
Serial Number: 73767895
GEOTRAK
Filed: March 22, 1991
services relating to the measurement of physical, geological properties of rocks below the earth's surface, used in the…
Owned by: BAKER HUGHES INCORPORATED and EXLOG, INC.
Serial Number: 74151664
