73658648
May 4, 1987
EQUIPMENT FOR MONITORING AND MEASURING OF DEEP-DRILLING, INSTRUMENTS FOR MEASURING THE DRILLING DIRECTION
MachineryINSTRUMENTS FOR THE DETERMINATION OF THE PINPOINT POSITION IN DEEP-DRILLING, INSTRUMENTS FOR DEFINING THE PATH OF A WELLBORE, INSTRUMENTS FOR MEASURING THE DEPTH, THE INCLINATION AND THE AZIMUT OF A BORE, ACCELEROMETER, INSTRUMENTS FOR INERTIAL NAVIGATION, GYROSTABILIZED PLATFORMS, RANDOM ACCESS MEMORY AND NICKEL/CADMIUM BATTERY STACK
Electrical and Scientific Apparatus