74278454
May 26, 1992
Sep 28, 1993
surveillance, monitoring and detection systems comprising closed circuit TV cameras, closed circuit TV enclosures, closed circuit motorized mounts, video monitors, video image enhancers, video switchers, video recorders, central processing units (CPU's) and supportive devices therefor, central processing unit (CPU) programs (software), digitized transmitters and receivers, security alarm control panels, security intrusion detection devices, and relay switches and devices for indoor and outdoor use in recreational areas
Electrical and Scientific Apparatus