Radio signal receiving apparatus with a security circuitry

Radio synchronized warning light system

Random offset alarm clock

Range monitoring apparatus

Raster display apparatus

Raster display position detection

Raster scan type CRT display system having an image rolling func

Raster scanned display system

Raster-scan display apparatus for computer-generated images

Rate-of-change combustion and contamination detection device

Real three-dimension visual display arrangement

Real time signal discrimination circuitry

Real-time medical alerting system

Received light level indicating system for beam sensor

Receiver apparatus for three-phase power line carrier communicat

Receiver for a distribution network power line carrier communica

Receiver for A.C. electrical supply signalling arrangement

Receiving apparatus

Receiving circuit for a data transmission system

Receiving program-presetting system for a television receiver