73107934
Nov 29, 1976
Feb 7, 1978
INDUSTRIAL, COMMERCIAL, AND RESIDENTIAL AIR MOVING EQUIPMENT-NAMELY, POWERED ROOF VENTILATORS, ATTIC FANS, EXHAUST FANS, DUCT FANS, WALL VENTILATORS, CEILING AND PROPELLER FANS, ELECTRIC AIR CIRCULATORS, SPOT COOLING FANS, PENTHOUSE ENCLOSURES FOR AIR HANDLING EQUIPMENT, AIR CONTROL LOUVERS, SHUTTERS AND GUARDS
Environmental Control Apparatus