HYDRAULIC COUNTERBALANCE

Oil well and gas well pumping machines, and hydraulic surface units for rod-pumped oil wells and gas wells, namely, systems consisting of hydraulic drives, hydraulic cylinders, hydraulic pumps, motors, valves, sensors, switches, and electronic controls, sold as a unit

Control systems and monitoring systems for oil well and gas well pumping equipment and installations, namely, electronic and hydraulic control systems for rod-pumped oil wells and gas wells, and prime mover monitoring, tank level monitoring, natural gas flow rate monitoring, and well location video surveillance equipment; electronic sensors for sensing position, pressure, temperature, voltage, and amperage for oil well and gas well pumping equipment; electric switches; electronic control systems for machines