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6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
oil and gas well drilling, fracturing, stimulation, production and flow processing system components of metal, namely, manifolds; manually operated metal flow control valves, not being parts of machines; chokes of metal for regulating fluid pressures in oil and gas well drilling, fracturing, stimulation, production and flow processing systems; metal pipes, tubulars, pup joints and flowlines; flexible pipes comprising primarily metal parts; metal pipe couplings, connectors, unions and fittings; metal pipe swivel joints; metal articulated frac arms and articulated frac arm manifolds
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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.
high-pressure pumps for use in oil and gas well hydraulic fracturing operations; truck, trailer and skid-mounted pumps for use in oil and gas well hydraulic fracturing operations; flow control valves being parts of machines; manifolds for use in oil and gas well hydraulic fracturing operations; truck, trailer and skid-mounted manifolds for use in oil and gas well hydraulic fracturing operations; electrical, hydraulic, and electro-hydraulic controls for operating machines in the nature of oil and gas well drilling, fracturing, stimulation, production and flow processing systems; swivel joints being parts of machines; articulated frac arms being parts of machines; articulated frac arm manifolds being parts of machines
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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.
control valves for regulating fluid flow; pressure relief valves for controlling fluid pressures in oil and gas well drilling, fracturing, stimulation, production and flow processing systems; pressure regulators for regulating fluid pressures in oil and gas well drilling, fracturing, stimulation, production and flow processing systems; electrical, hydraulic, and electro-hydraulic devices for use in the fields of oil and gas well drilling, fracturing, stimulation, production and flow processing; monitoring systems comprised of computer hardware, downloadable and recorded software, meters and sensors for monitoring oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components; downloadable and recorded computer software for the automation of oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components; telecommunications hardware and downloadable and recorded software sold as a unit for remote monitoring and data access of oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components
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37
Building construction; repair; installation services
oil and gas well drilling services, namely the operation of high-pressure pumps for use in oil and gas well hydraulic fracturing operations; hydraulic fracturing services; installation, maintenance, repair and refurbishment of high-pressure pumps for use in oil and gas well hydraulic fracturing operations