Title:
Sound system for model railways
United States Patent 3061973
Inventors:
Oberdorf, George S.
Publication Date:
11/06/1962
Export Citation:
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Assignee:
Annie, Gonzales H.
Primary Class:
446/409
Other Classes:
104/297, 381/334, 381/386
International Classes:
A63H19/14; A63H19/00
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US Patent References:
2978836Movable toys provided with phonograph
2882834Toy locomotive sound effects
2826996Vibrator operated load and signal system
2791972Vibrator excited loud speaker for toys
Foreign References:
FR1118988A