HOWITZER D83
Oil and gas well completion tools, namely, downhole tools, namely, [ packers, bridge plugs, service tools, namely, oil well plugs, treating assemblies, packers for use in controlling the flow and movement of fluids, ] hydraulic valves [, and open hole packers ] ; intelligent oil well completion systems, namely, sleeves designed to allow for injection into formation [ and downhole sensors used to isolate, monitor and control a well for increased productivity, special service tools, namely, pac...
Registered · August 31, 2015 · 86743082 ·