72173921
Jul 29, 1963
Sep 22, 1964
ENDLESS WOVEN PLASTIC BELTS WHICH ARE USED IN PAPER-MAKING MACHINES AND UPON WHICH THE PULP SUSPENSION OR SLURRY IS INITIALLY DEPOSITED TO FORM A SHEET OR WEB, SAID BELTS BEING COMMONLY REFERRED TO IN THE ART AS SHEET FORMING WIRES, BELTS, OR SCREENS
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