7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
machines for cleaning various types of surfaces using water pressure; oil well drilling equipment, namely, chain tongs, power operated drill pipe spinning wrenches; oilfield fluid end products, namely, chemical injection pumps and parts therefor, mud pump pistons and pump liners; electric and diesel power generators for oilfield equipment; vertical pipe-handling equipment having power-operated rotatable gripping head and stabbing boards; oilfield cementation equipment, namely, centralizers for casing and tubing, cement baskets, scratchers, wellbore wipers, and stop collars; oilfield float equipment, namely, float shoes, float collars, guide shoes, baffle collars, and stage cementing tools; oilfield cementing plugs, drill pipe/casing protectors, control line and sucker rod protectors; portable thread cleaners for cleaning threaded connections of oilfield tubulars, consisting of power drive assembly, brush housings and solvent tank therefor; oilfield production equipment, namely, wellhead and plant dehydrators, vertical oil treaters, production units comprised primarily of separators and heaters, sand traps, free-water knockouts, and pigging systems comprised of pigging units and drilling valves; oil well completion equipment, namely, packers, flow control equipment, subsurface valves, and sliding sleeves; casing patches, casing liners, and well screens; expandable tubular products, namely, sand screens, casing patches, and expandable liners and liner hangers; casing liner hangers; top drive units; rotating control heads; blowout preventors; downhole motors and turbines for drilling; oil well fishing, cutting and rental equipment, namely, mills, whipstocks and jars; fluid recovery system, namely, downhole pumps with surface drive units, jet pumps, hydraulic pumps, and electric motors with pumps
9
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
oilfield pressure testing apparatus for testing of tubulars, blowout preventors, wellheads, christmas trees, manifolds, lubricators, and other pressure vessels; oilfield production equipment, namely, pressure vessels, well-testing units, and metering separators; automatic wellhead pressure relief valves