74263440
Apr 7, 1992
Jun 8, 1993
power operated drilling machinery; namely, rock drilling rigs; feeders and positioning guides for rock drills and core drills; rod handling equipment; namely, mechanized grippers and reciprocating chucks; attachments for rock drills and core drills; namely, rod holders, rod racks, high torque gear boxes, gripping chucks, hydraulic power units, and hydraulic rod tongs
Machinery