74084798
Aug 1, 1990
Dec 8, 1992
video cassette recorders, video cameras, monitors, and electronic devices for generating and superimposing text and other visual effects upon video signals, and for triggering and manipulating video signals from remote cameras; namely, time, date, and title generators, channel splitters, synchronous serial interfaces, special event controllers, and alarm receivers and transmitters
Electrical and Scientific Apparatus