U.S. federal trademark · Serial No. 78230517 · Reg. No. 2893201
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
MATERIALS HANDLING SYSTEMS COMPRISING MATERIAL CONVEYORS AND SEPARATING MACHINES FOR THE REMOVAL OF AIRBORNE WASTE MATERIALS FROM CONVEYING AIR
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