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.
fluid flow meters; pressure measuring apparatus in the nature of pressure meters; measuring instruments in the nature of densitometers; viscosity meters for measuring the viscosity of fluids; multiphase meters; fluid flow totalizers; fluid flow analyzers; fluid flow controllers in the nature of control valves for regulating fluid flow; liquid level monitoring systems comprised of computer hardware, downloadable and recorded software, meters and sensors for monitoring liquid levels in oil and gas well drilling, fracturing, stimulation, production and flow processing systems; instruments for the detection of the lower explosive limit of gases, namely, lel detection systems; pressure sensors; temperature sensors; oil and gas quality sensors; liquid level sensors; flow computers; 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 controlling oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components; 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 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
37
Building construction; repair; installation services
hydraulic fracturing services; oil and gas well drilling services, namely, well stimulation services; operation and control of oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components; technical consulting services in the field of oil and gas well drilling, fracturing, stimulation, production and flow processing operations