74241928
Jan 31, 1992
security systems comprising personal security alarms for individuals to provide distress signals to monitoring stations; security system equipment for sensing individual distress signals and relaying the same to a monitoring system; security equipment for monitoring activity of a security system receptive to distress signals provided by individuals within a predetermined geographic grid
Electrical and Scientific Apparatusconsulting in conjunction therewith security monitoring services and operating security systems comprising security alarms
Computer and Scientific