72068419
Feb 25, 1959
Nov 6, 1962
FABRICS MADE BY BONDING A MIXTURE OF NATURAL FIBER STAPLES, OR A MIXTURE OF SYNTHETIC FIBER STAPLES, OR A MIXTURE OF NATURAL AND SYNTHETIC FIBER STAPLES, SPECIALLY ENGINEERED AND SOLD FOR INDUSTRIAL USE IN, AMONG OTHER THINGS, FILTERS, SOUND INSULATION, HEAT INSULATION, ELECTRIC INSULATION INCLUDING BATTERY SEPARATORS, WIPING MATERIALS, POLISHING MATERIALS INCLUDING ABRASIVE FACINGS, AND LAMINATIONS INCLUDING OVERLAYS AS SUBSTITUTES FOR ENAMELS, AND AS REINFORCEMENTS OR AS BACKINGS OR AS MEANS FOR PRODUCING TRANSPARENT OUTER FACINGS FOR VARIOUS OTHER MATERIALS FOR INDUSTRIAL USE
Computer and Scientific