Filed Aug. 30, 1951

Serial No. 71618238

Registered April 20, 1954

Registration No. 588,523

Class [ EXHAUST FANS; UNITS COMPRISING A SUPPLY AND RETURN AIR DUCT ] AND AN EXHAUST FAN FOR THE DRAFT-FREE REMOVAL OF ROOM AIR; [ UNITS COMPRISING A SUPPLY AND RETURN AIR DUCT, ] AN EXHAUST FAN FOR THE DRAFT-FREE REMOVAL OF ROOM AIR, AND AN AIR HEATER; UNITS COMPRISING A SUPPLY AND RETURN AIR DUCT, AN EXHAUST FAN FOR THE DRAFT-FREE REMOVAL OF ROOM AIR, AN AIR HEATER, AND AN AIR COOLER; UNITS COMPRISING A SUPPLY AND RETURN AIR DUCT, [ A FAN FOR THE DRAFT-FREE REMOVAL OF ROOM AIR, AN AIR HEATER, AND AN AIR FILTER; UNITS COMPRISING A SUPPLY AND RETURN AIR DUCT, ] A FAN FOR THE DRAFT-FREE REMOVAL OF AIR, AN AIR HEATER, AN AIR COOLER, AND AN AIR FILTER; AIR-HUMIDIFIERS; AIR-DEHUMIDIFIERS; AIR-CONDITIONING UNITS; AXIAL AND CENTRIFUGAL VENTILATORS; [ THIN LAYER EVAPORATORS; SPRAY-DRIERS ]; 034

Case Type Trademark