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TOOLS FOR USE IN DRILLING AND PERFORMING REMEDIAL OPERATIONS WITHIN OIL, GAS, WATER, GEOTHERMAL AND OTHER MINERAL WELLS, NAMELY PACKER MILLING AND RETRIEVING SPEARS AND TOOLS, EXTERNAL TUBING CUTTERS, EXTERNAL DRILL PIPE CUTTERS, BACKOFF CONNECTORS, REVERSING TOOLS, SAFETY JOINTS, PULLING TOOLS, CASING PULLERS AND SWAGES, ROTARY SHOES, BOOT BASKETS, DRILLING JARS, DRILLING BUMPER SUBS, FISHING BUMPER SUBS, OVERSHOTS, JUNK BASKETS, RELEASING SPEARS, PACKER RETRIEVING SPEARS, SYSTEMS FOR USE IN SERVICE AND TESTING DOWNHOLE DRILLING AND FISHING TOOLS, INCLUDING THE DEVELOPMENT OF TORQUE IN MAKING UP AND BREAKING OUT THREADED CONNECTIONS, CONSISTING OF VISES, TONGS, JACKS, CRANES AND HOISTS MOUNTED ON A PORTABLE SKID, A TEST RACK, AND A CONSOLE FOR SUPPLYING POWER TO THE TEST RACK AND COMPONENTS MOUNTED ON THE SKID