A Z GRANT INTERNATIONAL

earth drilling machines and parts therefor; namely, downhole drilling motors, drill collars, casing liners, string reamers, bit reamers, underreamers, drill bits, cutters, stabilizers, mud saver valves, casing cutters, anchors and packers, whipstocks, milling tools, casing string cementing tools, slip assemblies comprising slips and slip housings, drilling heads, casing scrapers, torque controls, bumper subs, hydraulic junk baskets, marine swivels and spears, hole openers, compressible drill pipe and casing patches