73761616
Nov 3, 1988
Nov 20, 1990
WATER AND WASTE WATER FILTERING UNITS AND REPLACEMENT FILTER CARTRIDGES THEREFOR, SEDIMENT FILTERING UNITS AND SEDIMENT FILTERING CARTRIDGES THEREFOR, SUBMICRON FILTERING UNITS AND SUBMICRON FILTERING CARTRIDGES THEREFOR, ACTIVATED CARBON FILTERING UNITS AND REPLACEMENT CARTRIDGES THEREFOR, REDOX MEDIUM FILTERING UNITS AND REPLACEMENT CARTRIDGES THEREFOR, AND REDOX MEDIUM AND ACTIVATED CARBON FILTERING UNITS AND REPLACEMENT CARTRIDGES THEREFOR; REVERSE OSMOSIS WATER AND WASTE WATER PURIFIERS AND DESALTING FILTER CARTRIDGE THEREFOR; AND WATER AND WASTE WATER DEMINERALIZATION UNITS; INDUSTRIAL, COMMERCIAL INSTITUTIONAL AND/OR RESIDENTIAL
Environmental Control Apparatus