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