77485207
May 28, 2008
Nov 3, 2009
Video security systems comprised of video cameras, video data recorders, video transceivers, and multiplexers, video data power transmission hub and unshielded twisted pair, namely, video transceiver with power and data in a passive (non-amplified) device that allows the transmission of real-time monochrome or color video over unshielded twisted-pair wires
Electrical and Scientific Apparatus