73687176
Sep 30, 1987
Jun 7, 1988
AUDIO AND/OR VIDEO TELECONFERENCE SERVICE USING ELECTRONIC CONFERENCING, SWITCHING AND BRIDGING TECHNOLOGIES TO INTERCONNECT CLIENTS (USERS) FOR EDUCATIONAL AND INFORMATIONAL MEETINGS, CLASSES, COURSES, WORKSHOPS AND SEMINARS VIA TELEPHONE LINES, SATELLITE, MICROWAVE AND OTHER TRANSMISSION SYSTEMS
Telecommunications