74136154
Feb 1, 1991
Nov 16, 1993
computer networking systems comprised of wiring concentrators and data communication components for local and wide area networks; namely, chasses for wiring concentrators, connectivity modules, backbone modules, power supply modules, ring in/ring out modules, doublers and repeaters, transceivers, network management modules, internetworking modules, terminal servers, internetworking bridges and routers, and computer network management systems comprised of interface modules and software programs
Electrical and Scientific Apparatus