77649090
Jan 14, 2009
Jun 15, 2010
Machines for extracting oil, other fluids and gas from underground and underwater locations and machine components thereof, namely, fluid and air compressors, pumping control valves, and pneumatic controls for all the foregoing; hydraulically operated lift systems; oil and gas well downhole machines and equipment; artificial lift systems; pumps as parts of machines; submersible pumps, underwater pumps
Machinery