75269766
Apr 7, 1997
Jan 18, 2000
voice/data telecommunications switching systems for interconnection and exchange of information in communications networks, namely connector and interface circuit boards, power supply, main processor, computer memory in the form of semiconductor chips, battery for memory, modem, cabinet for housing components of the system, and computer software for voice/data communications switching and control of computer hardware dedicated to such switching and instruction manual all sold as a unit
Electrical and Scientific Apparatus