72295305
Apr 10, 1968
Mar 4, 1969
SELF-CONTAINED AIR CONDITIONING UNITS AND WINDOW MOUNTED COOLERS FOR COOLING AND VENTILATING; AIR CONDITIONING SYSTEMS FOR DRYING, VENTILATING, HEATING, COOLING, HUMIDIFYING AND/OR DEHUMIDIFYING; AIR WASHERS; FANS, COLD DIFFUSERS-NAMELY, A REFRIGERATING COIL AND A FAN; HEAT DIFFUSERS-NAMELY, A HEATING COIL AND A FAN; BOILERS; INDIRECT HEATING UNITS; UNIT HEATERS; DUCT FURNACES; WARM AIR FURNACES; RESIDENTIAL AIR CONDITIONING UNITS; ADD-ON COOLING UNITS FOR RESIDENTIAL AIR CONDITIONING UNITS; HUMIDIFIERS AND DEHUMIDIFIERS
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