73679992
Aug 24, 1987
Mar 10, 1992
DRILLING TOOLS; NAMELY, SHOCK TOOLS, FISHING BUMPER SUBS, JAR ACCELERATORS, COMBINATION DRILLING JARS, FISHING JARS, HYDRAULIC MECHANICAL JARS, RIB STABILIZERS, REAMERS, KELLY VALVES, CUBING SAFETY VALVES, KELLY COCKS, INSIDE BLOW-OUT PREVENTERS AND STABBING VALVES, BREAK-OUT MACHINES, BLOW-OUT PREVENTERS, STABILIZERS, RIG LEVELLING JACKS, SHEAVE UNITS, DRILL COLLAR HANDLING SYSTEMS AND SINGLE JOINT ELEVATORS
Machinery