71452469
Apr 21, 1942
Jan 26, 1943
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, Spelter, for Welding, Brazing, and Soldering Purposes
Jewelry