73469603
Mar 12, 1984
Jun 11, 1985
Well-Drilling Data Processors Used for Providing Computer Read-Out Information Indicative of Parameters Useful When Drilling Oil and Gas Wells-Namely, Time, Depth, Rate of Penetration, Hook Load, Bit Weight, Pump Pressure, Pump Strokes, Rotary RPM, Rotary Torque, Mud Volume, Mud Volume Deviation, Flow Line Rate, Gas Presence, and the Like
Electrical and Scientific Apparatus