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COMPONENTS FOR DATA PROCESSING EQUIPMENT-NAMELY, MAGNETIC CORES, MEMORY PLANES, STACKS OF MEMORY PLANES WITH CONTROLLED NETWORKS, MEMORY SYSTEMS, SHIELDING BEADS, THREADED SLUGS, CHOKE COILS, FILTERS, RESISTORS, MAGNETIC RECORDING HEAD ASSEMBLIES, PELTIER BATTERIES WITH OR WITHOUT CONTROL NETWORKS, CAPACITORS, MAGNETO-STRICTIVE FERRITES