AIRSCREEN

MATERIALS HANDLING SYSTEMS COMPRISING MATERIAL CONVEYORS AND SEPARATING MACHINES FOR THE REMOVAL OF AIRBORNE WASTE MATERIALS FROM CONVEYING AIR

AIR VENTILATION AND FILTERING SYSTEMS COMPRISING VENTILATING FANS AND FAN BLOWERS FOR COMMERCIAL AND INDUSTRIAL USE FOR SEPARATING AIRBORNE WASTE MATERIALS FROM AIR, AND METAL DUCTS THEREFORE SOLD AS A UNIT