72296361
Apr 23, 1968
Dec 15, 1970
[ MOLDING SAND ADDITIVES, FOUNDRY PARTING COMPOUNDS, PATTERN COATING COMPOUNDS FOR FOUNDRY USE, CORE WASH, AND FOUNDRY FACINGS ]
ChemicalsCHEMICAL COMPOUNDS FOR USE IN FOUNDRY AND CASTING WORK-NAMELY, DEOXIDIZING, PURIFYING, DEGASSING, AND HARDENING AGENTS
Metal Goods