73037912
Nov 22, 1974
Jan 27, 1976
HYDRAULIC PIT PROPS; HYDRAULIC APPARATUS FOR USE IN MINING OPERATIONS IN SUPPORTING ROOFS AND INCORPORATING RAMS FOR MOVEMENT OF SAID APPARATUS; HYDRAULIC RAMS; HYDRAULIC BURSTERS FOR BREAKING MATERIAL SUCH AS CONCRETE, STONES, SLAG, ETC. FROM DRILLED HOLE AREAS; AND INTEGRAL PARTS OF ALL THE AFORESAID GOODS
Machinery