72250716
Jul 21, 1966
Feb 21, 1967
E. I. DU PONT DE NEMOURS AND COMPANY
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REINFORCED POROMERIC MATERIAL FOR GENERALIZED USE IN THE INDUSTRIAL ARTS; SUCH AS, GASKETS, SEALS, DIAPHRAGMS, BUFFING AND POLISHING PADS, VIBRATING DAMPERS, PACKINGS, AND BRIDGE PADS