LEOPOLD

Class [11]
Environmental Control Instrument Products lighting heating cooling cooking

Water filters and waste water purification installations for the treatment, purification, filtration and supply of water and for the treatment of waste water; effluent and sewage equipment for filtering municipal, commercial or industrial water and wastewater, namely, plastic filter underdrain blocks, clay filter underdrain blocks, porous plates for supporting media in filters, filter media, gravel for supporting filter media in filters; piping, agitators, supports and stabilizers for piping and agitators, wash troughs, nozzles, effluent troughs, weirs and baffles, weir pans, gates and guides for controlling water flow, valves, specialty filters, pilot filter equipment, blowers and compressors for supplying backwash air to filters, carriage filters, with or without skimmers all sold as a unit; sludge collection equipment for wastewater treatment, namely, floating siphon sludge collectors, skimmers and scum troughs sold as a unit; Equipment for the treatment of wastewater, namely denitrification systems, dissolved air floatation systems, aeration diffusers, diffuser piping, clarifiers, complete activated sludge processing plants, and structural parts therefor; wastewater treatment and disposal plants in the nature of activated sludge plants, and structural parts therefor for the treatment of liquid and solid contaminants included in municipal and industrial waste water, in International Class 11.