77840071
Oct 2, 2009
Nov 1, 2011
Oil and gas drilling machines, namely, pipe handling drilling machines that are used for making connections between jointed pipes while maintaining fluid flow through the pipe
MachineryOil and gas drilling equipment, namely, integrated pressure control equipment in the nature of automatic pressure control machines and instruments, and electronic control systems therefor, that is used for making connections between jointed pipes while maintaining fluid flow through the pipe
Electrical and Scientific Apparatus