73688775
Oct 9, 1987
Jun 7, 1988
ELECTRONIC SECURITY APPARATUS COMPRISING BURGLAR ALARMS, FIRE ALARMS, TEMPERATURE CONTROLS, ACCESS CONTROL UNITS, INCLUDING THOSE ACTIVATED BY ENCODED CARDS, CLOSED CIRCUIT TELEVISION CAMERAS, RECORDERS, AND MONITORS, ALARM SIGNAL MONITORING UNITS, AND TEMPERATURE CONTROL MONITORING UNITS
Electrical and Scientific Apparatus