HERMAN NELSON

COMMERCIAL AND RESIDENTIAL AIR CONDITIONING UNITS, AND PARTS THEREOF, FORCED DRAFT UNIT VENTILATORS OF THE CABINET TYPE, FORCED DRAFT UNIT HEATERS OF THE FLUID-HEATED RADIATOR TYPE, COMPLETE VENTILATING BLOWER UNITS, PROPELLER FANS FOR DIRECT INDUSTRIAL, COMMERCIAL AND INSTITUTIONAL VENTILATION, CENTRIFUGAL FANS FOR HEATING, VENTILATING AND AIR CONDITIONING SYSTEMS, FORCED DRAFT PORTABLE LIQUID-FUEL HEATERS FOR TEMPORARY INDOOR AND OUTDOOR HEATING, THAWING AND DRYING PURPOSES AND FORCED DRAFT PORTABLE VENTILATORS FOR TEMPORARY VENTILATING PURPOSES