HERMAN NELSON

FORCED DRAFT UNIT VENTILATORS OF THE CABINET TYPE, (2) FORCED DRAFT UNIT HEATERS OF THE FLUID-HEATED RADIATOR TYPE, (3) COMPLETE VENTILATING BLOWER UNITS, (4) PROPELLER FANS FOR DIRECT INDUSTRIAL, COMMERCIAL AND INSTITUTIONAL VENTILATION, (5) CENTRIFUGAL FANS FOR HEATING, VENTILATING AND AIR CONDITIONING SYSTEMS, (6) FORCED DRAFT PORTABLE LIQUID-FUEL HEATERS FOR TEMPORARY INDOOR AND OUTDOOR HEATING, THAWING AND DRYING PURPOSES AND (7) FORCED DRAFT PORTABLE VENTILATORS FOR TEMPORARY VENTILATING PURPOSES