71670085
Jul 16, 1954
Jun 14, 1955
AMERICAN AIR FILTER COMPANY INC.
Active Trademark
AUTOMATIC, SELF-CLEANING, VISCOUSTYPE VENTILATING AIR FILTERS HAVING AN ENDLESS POROUS CONVEYOR MOVABLY SUPPORTING AN AIR POROUS WEB-LIKE FILTER MEDIA WHICH IS FED FROM A SUPPLY ROLL
Natural Agricultural Products