73721209
Apr 8, 1988
Jul 11, 1989
CABLE TELEVISION (CATV) DISTRIBUTION SYSTEMS, NAMELY SIGNAL CONVERTERS USED IN CABLE TELEVISION DISTRIBUTION SYSTEMS, FOR CONVERTING FM AND/OR AM SIGNALS USED TO CARRY MULTI-CHANNEL CLEAR AND SCRAMBLED AUDIO AND VIDEO SIGNALS OVER FIBER OPTCS INTO AM SIGNALS USED IN EXISTING CABLE DISTRIBUTION SYSTEMS
Electrical and Scientific Apparatus