Motors: expansible chamber type
Relatively movable working members with one having motive...
One working member oppositely biased by another
Inventor
active
Apparatus for drifting openings in hard rock
Hammer for breaking strong abrasive materials
Idle stroke braking unit for an impact device
Machine for driving workings in hard rocks
Percussive action machine
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Profile ID: LFUS-PAI-P-880541