76169918
Nov 22, 2000
Mar 18, 2003
Blacksmithing, burnishing by abrasion, cadmium plating, chromium plating, coppersmithing, electroplating, engraving, galvanization, gilding, glass-blowing, gold-plating, grinding, metal casting, metal plating, nickel plating, silver plating, soldering, tin-plating, vulcanization
Treatment of Materials