71689158
Jun 8, 1955
Feb 21, 1956
SOFT, HARD, AND SILVER SOLDERS; SOLDER PASTES; AND WELDING ALLOYS, WELDING RODS, CUTTING RODS, BRAZING RODS AND THE LIKE FOR USE IN BOTH ELECTRIC ARC AND OXY-ACETYLENE WELDING AND IN BOTH LOW TEMPERATURE AND HIGH TEMPERATURE WELDING APPLICATIONS
Jewelry