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ELECTRONIC SWITCHING APPARATUS AND FOR TELECOMMUNICATION EQUIPMENT AND ELECTRONIC SYSTEMS ANALYSIS EQUIPMENT-NAMELY, AUTOMATIC TRAFFIC RECORDING AND TRANSCEIVING TERMINALS, CENTRAL DATA CONTROL COMPUTERS, ELECTRONIC CIRCUIT TESTING APPARATUS, DATADISPLAY MONITORS, TRAFFIC USAGE SCANNERS AND RECORDERS, TRAFFIC RECORDING TERMINAL INTERROGATING UNITS, COMPUTER INTERFACE ELECTRONIC EQUIPMENT, TELEPRINTERS, TONE TRANSMITTERS AND RECEIVERS, TONE TRANSMITTERS AND RECEIVERS AND MAGNETIC TAPE RECORDERS