EASTMAN CHRISTENSEN COMPANY

ACCU-TRAK

ELECTRONIC MEASURING INSTRUMENTS FOR USE IN WELL DRILLING, COMPRISING INSTRUMENTS WHICH SENSE, MEASURE, TRANSMIT, RECORD AND PROVIDE READOUT OF DRIFT, AZIMUTH, TOOL FACE ORIENTATION, TEMPERATURE, AND GAMMA RAY AND ELECTRICAL RESISTIVITY; AUTOMATIC AND MANUAL VALVE ASSEMBLIES ALL SOLD AS A UNIT AND BATTERY PACK FOR THE ABOVE EQUIPMENT;ACCU-TRACK;

BALLASET

DRILL BITS FOR POWER-OPERATED DRILLS;

CHRISTENSEN LESS COST PER FOOT

Drilling and Cutting Tools and Equipment-Namely, Drill Bits, Core Bits, Core Barrels, Reamers, Washover Shoes, Drill Collars, Stabilizers, Jarring Tools, Shock Absorbers, and in Hole Motors, Used in Mining, Well Drilling and Coring Operations;No claim is made to exclusive use of the phrase Less Cost Per Foot apart from the mark as shown.;

EASTMAN CHRISTENSEN

MECHANICAL AND MAGNETIC MEASURING AND ORIENTATION INSTRUMENTS ALL FOR USE IN WELL DRILLING, NAMELY INSTRUMENTS FOR INDICATING DRIFT, HAND OPERATED DRIFT INDICATORS AND SURVEYING INSTRUMENTS; ELECTRONIC MEASURING AND ORIENTATION INSTRUMENTS FOR USE IN WELL DRILLING, COMPRISING INSTRUMENTS WHICH SENSE, MEASURE, TRANSMIT, RECORD AND PROVIDE READOUT OF DRIFT, AZIMUTH, TOOL FACE ORIENTATION, TEMPERATURE, AND GAMMA RAY AND ELECTRICAL RESISTIVITY; AUTOMATIC AND MANUAL VALVE ASSEMBLIES ALL SOLD AS A UNIT AND BATTERY PACKS FOR THE ABOVE EQUIPMENT; TOOL TESTING UNITS; AND COMPUTERS AND COMPUTER PROGRAMS USED IN THE FIELD OF WELL DRILLING;MACHINES FOR DRILLING, BORING, REAMING, CUTTING, SAWING, AND CHISELING, AND BITS AND BLADES USED THEREFOR, PARTS THEREOF, AND FITTINGS THEREFOR, NAMELY, WASHOVER SHOES, CORE EJECTORS, CORE BARRELS, INNER TUBES, JUNK BASKETS, MUD SCREENS, SAFETY JOINTS, AND SHOCK ABSORBERS; MOTORS, STABILIZERS, DRILL COLLARS, JARS, ALL FOR USE IN WELL AND MINING DRILLING, EXPLOITATION AND MAINTENANCE; MACHINES USED FOR MAKE-UP AND BREAK-OUT OF CONNECTIONS, HYDRAULIC VICES, METAL THREAD WORKING UNITS, AND TOOL MOUNTING CYLINDERS;ENGINEERING AND GEOLOGICAL SERVICES NAMELY SERVICES OF PLANNING WELL DRILLING, WELL DESIGN, HYDRAULIC ANALYSIS, WELL SURVEYING, AND SERVICES OF ON SITE SUPERVISION OF WELLS;

REBEL

DIRECTIONAL DRILLING TOOL;