7 Machine parts, namely, rolling element anti-friction bearings for use in oil field equipment, heavy industrial equipment, and electric motors; hydraulic and pneumatic drill pipe make-up and breakout tools used to connect and disconnect pipe in the oil and gas drilling industry, namely, hydraulic power units; oilfield equipment, namely, platform machines for conveying drill pipe and other tubulars used for oil and gas exploration and production; machine parts, namely, rolling element anti-friction bearings for use in oil field equipment; centrifugal pumps and structural parts therefor; electrical thrusters for remotely-operated propulsion machinery for observing, building, maintaining and operating underwater structures and equipment; submersible electric motors other than for land vehicles for remotely-operated propulsion machinery and similar underwater applications; underwater equipment, namely, remotely operated underwater construction machines used to dig trenches and plows; commercial underwater equipment, namely, remotely operated construction machines used to dig trenches and plows with operating controls sold as a unit therewith, and structural component parts therefor; cranes for use by the oil and gas industry; machines for rotating pipe to connect and disconnect pipe sections; machine parts, namely, liners, pistons, and valves having a corrosion and abrasion resistant surface for pumps, hydraulic lifts, and motors; Machine parts, namely, pipes, joints, connectors, metal pipe fittings, insulating joints and flanges made of metal; Machine parts, namely, rope sockets made of metal being parts of machines; winch systems, namely, winches comprised of a drum, level wind, power source, and drive for deploying commercial equipment from a boat or platform into a body of water; telescoping cranes for deploying commercial equipment from a boat into a body of water; Machines in the nature of powered sheave systems comprised of sheaves and metal hanger assemblies for deploying commercial equipment from a boat or platform into a body of water; positive displacement pumps and structural parts therefor; industrial cleaning machines for delivering pipeline cleaning and inspecting apparatuses to subsea pipelines and retrieving pipeline cleaning and inspecting apparatuses from subsea pipelines; remotely operated submersible drilling machines used for drilling, coring and sampling rock and seabed materials; Machines, namely, lubricators in the nature of lubrication machines for oil and gas drilling equipment; metal roller bearings for machines for use by the oil and gas industry; instrumentation for oilfield applications, namely, pneumatic controls for machines, motors and engines