73274275
Aug 15, 1980
Nov 30, 1982
Filtration Systems Comprising Some or All of the Following: Pressure Filters, Vacuum Filters, Precoated Filters, Deep Bed Filters, Filter Presses, Tanks, Drag Tanks, Oil-Skimmers, Granular Filter Media and Sheet Filter Media, Filter Conveyors, Filter Seals, Filter Hoses, Filter Shell Actuators, Filter Discharge Weirs, Filter Valves, Filter Pneumatic and Electric Controls, Filter Precoat Feeders, Filter Valve Operators, Filter Pumps, Filter Liquid Level Sensors, Filter Instrument Gauges, Filter Dome Lifters, Filter Tubes, Filter Media and Scrubbers
Environmental Control Apparatus