Stereo voice transmission apparatus, echo canceler, and...

Stereophonic earphone apparatus

Stereophonic headphones

Stereophonic phonograph pickup

Stereophonic pickup cartridge

Stereophonic reproducing system

Stereophonic sound producing apparatus for a game machine

Stereophonic sound reproducing apparatus

Stereophonic sound reproduction system

Stereophonic soundbox

Stick-on telephone ear-piece cover

Stored charge transducer

Stress-compensated quartz resonators

Stress-hall-effect transducing device

Structure for installing bone conduction device on eyeglasses

Structure magnetique pour moteur sans fer de haut-parleur...

Structure-borne sound detector for an intruder alarm system

Stylus arm pivot

Stylus assembly and process for making same

Stylus assembly and transducer using same