72446151
Jan 17, 1973
Oct 22, 1974
CHEMICAL AGENT FOR ELIMINATING AND PREVENTING GREASE AND SCUM BUILDUP IN SEWAGE TREATMENT PLANTS, AND PARTICULARLY IN DIGESTER UNITS THEREOF, FOR REDUCING FOAM BUILD-UP IN AERATION TANKS, AND FOR ELIMINATING AND PREVENTING GREASE BUILD-UP IN SEWER SYSTEMS
Metal Goods