78585564
Mar 11, 2005
Drilling tools having electronic components for drilling oil, gas and geothermal wells, namely - drill pipe, joints, drill collars, heavy weight drill pipe, jars, motors, reamers, turbines, shock absorbers, fishing tools, drill bits, subs, links, bottom hole assemblies, mud sirens, hammers, steering tools, generators, seismic wave generators and receivers, swivels, kelleys, top hole drives, and derricks
Electrical and Scientific Apparatus