73454553
Nov 28, 1983
Feb 10, 1987
APPARATUS AND DEVICES USED IN THE PROCESS OF CONVEYING MOLTEN METAL, NAMELY, SLIDE GATE VALVES FOR HYDRAULIC POURING UNITS
MachineryAUTOMATIC CONTROLS FOR HYDRAULIC POURING UNITS USED IN POURING AND CONVEYING MOLTEN METAL
Electrical and Scientific ApparatusBLOCK, PLATES AND TUBES MADE OF REFRACTORY MATERIAL USED IN THE PROCESS OF CONVEYING MOLTEN METAL
Nonmetallic Building Materials