72184790
Jan 17, 1964
Oct 25, 1966
RUST, CORROSION AND SCALE INHIBITORS IN BOILERS AND RETURN LINES, AND CHEMICAL PREPARATIONS TO PREVENT SCALE AND RUST FORMATIONS AND DISSOLVING BOILER SCALE FORMATIONS
Metal GoodsDESCALERS, DEGREASERS AND PREPARATIONS FOR REMOVING SLUDGE, RUST, SCALE AND CORROSION FORMATIONS
Metal Goods