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

Reconstruction of signals using redundant channels

Record measurement method and system using radio frequency...

Redundant DC power supply for analog computers and the like

Redundant power communications circuit

Refereeing aid system for ball games

Refrigeration alarm

Refrigeration unit air temperature detection alarm system

Relaxation switch

Reminder device

Remote AC power control with control pulses at the zero crossing