Toy locomotive sound effects
United States Patent 2882834

Inventors:
Smith, William R.
Publication Date:
04/21/1959
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Assignee:
GILBERT CO A C
Primary Class:
Other Classes:
446/410, 340/384.300, 246/473R
International Classes:
A63H19/14; A63H19/00
US Patent References:
2792409Vibratory impulsed circuits with booster
2826996Vibrator operated load and signal system