Rain gauge of the tiltable spoon type

Random-filament, multi-directionally responsive marker for...

Range gated strip proximity sensor

Range insensitive infrared intrusion detector

Range limited coherent frequency doppler surveillance system

Rate of change responsive alarm system

Rate of rise detector for use with explosion detection and...

Reaction time measurement system

Real time adaptive round discrimination fire sensor

Real time programmable digital register analyser

Real time signal discrimination circuitry

Rearview mirror assembly with internally mounted compass sensor

Receiver for signal from remote location

Receiving circuit for a data transmission system

Receiving device

Recyclable article protection

Redistributing magnetic charge in bias element for...

Reducing medical error

Reduction of false alarms in electronic theft detection systems

Reflective aluminum trim