74116353
Nov 19, 1990
Jan 21, 1992
information communication and processing units; modems; line drivers, time division multiplexers, statistical multiplexers, distributed communications processors, voice digitizers, network processor units, network control and management units, network switching units, digital encryption and security units, and information processing work station units, and pre-recorded computer programs for use with information communication and processing units
Electrical and Scientific Apparatus