73276964
Sep 8, 1980
Oct 5, 1982
Rotary Vacuum Filters Used with Machines to Remove Suspended Solids from Liquids; Precipitators-Namely, Apparatus for Adding Chemicals to Precipitate Dissolved Materials from Solutions and Recovery of the Liquids and Solids
MachineryWaste Water Samplers for Sewers, Waste Treatment Plants, Sewer Outfalls and the Like which Automatically Provide Accurate Proportional Samples on a Timed Basis for Analysis; Control Units which Regulate Concentration of Solutions and Slurries
Electrical and Scientific ApparatusClarifiers in the Nature of Settling Tanks for Removing Sludge from Solutions; Oil - Water Separators in the Nature of Coalescers in which Water and Oil Separate into Two Layers and the Water Is Drained Off; Chemical Treatment Systems-Namely, Apparatus for Coagulating Solids in which Flocculating Chemicals Are Added to Liquids Causing Pollutants to Precipitate and Drop Out of Suspension
Environmental Control Apparatus