Multi-message phonograph system

Phonograph for a record disk having a plurality of sound grooves

Record disc replacing means

Record disc replacing means for a selective playing type sound r

Simple acoustic playback device for a record having plurality of

Simplified sound reproducing device

Simplified sound reproducing device capable of reproducing a plu

Simplified sound reproducing device driven by a spring motor

Simplified sound reproducing device having a plurality of extern

Simplified sound reproducing device having a plurality of extern

Sound reproducing apparatus for non-rotating plate-shaped or she

Sound reproducing device

Sound reproducing device driven by a constant torque pull string

Sound reproduction selection apparatus for a simplified sound re

Variety playing sound reproducing device