71462760
Aug 14, 1943
May 8, 1945
METALLIC WELDING, BRAZING, AND SOLDERING ALLOYS IN THE FORM OF ELECTRODES AND RODS COATED WITH OR HAVING INCORPORATED THEREIN FLUX SUBSTANCE; NON-TACKY CEMENTING MATERIAL IN THE NATURE OF A SOLDER AND SPELTER FOR WELDING, BRAZING, AND SOLDERING PURPOSES
Jewelry