78560893
Feb 4, 2005
Flow regulators for downhole oil field use to control the flow of hydrocarbons and/or water and/or particulates in oil and gas wells
Electrical and Scientific ApparatusOil purifying installations, namely, downhole oil field equipment composed primarily of filters, screens, valves and flow regulators used in oil and gas wells to control the flow of hydrocarbons and/or water and/or particulates in oil and gas wells
Environmental Control Apparatus