73456946
Dec 14, 1983
May 14, 1985
Electrical and Electronic Entry Security Systems and Components Therefor-Namely, Electro-Magnetic Locks, Solenoid Operated Bolts, Controllers, Power Supplies, Magnetic Latch Releases, Automatic Time Switches, Key Operated Switches, Push Button Coded Switches, Door Condition Monitoring Consoles, Electrically Operated Audio and Visual Alarms, Switches, and Door Release Devices
Electrical and Scientific Apparatus