Plural source arbitration system
Pneumatically-controlled, user-operated switch interface
Pocket-portable radio code signal transmitter for automotive key
Polling communication system
Polling communication system with priority control
Polling control system for switching units in a plural stage swi
Polling method and apparatus
Polling method and apparatus for a digital processing system
Polling system for multiple terminal units
Polling system for use in an audio system
Polling-type information transmission system
Polyfunction programmable data receiver
Porch or entry switch providing emergency signals
Port expander for utility meter reading
Portable battery operated power managed event recorder and inter
Portable communications receiver with separate information prese
Portable control code transmitter with delayed code neutralizati
Portable electronic activation device
Portable electronic device and a method for processing data ther
Portable information device, access device for portable...