73109197
Dec 10, 1976
Apr 25, 1978
ELECTRONIC SECURITY AND ACCESS CONTROL SYSTEMS, COMPRISING PRINCIPALLY OPERATOR CONSOLES, PROGRAMMED PROCESSORS, MEMORY DEVICES, CARD READERS, PRINTERS, ALARMS, STATUS SWITCHES, ACCESS OPENERS, CLOSERS, AND LOCKS, ALL OF THE ABOVE SOLD AS UNITS
Electrical and Scientific Apparatus