Toy stethoscope
United States Patent 2715296
US Patent References:
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- - 0479636

/0581929.html
- - 0581929

/0621892.html
- - 0621892

/0652442.html
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Inventors:
Frank, Pettit
Publication Date:
08/16/1955
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Assignee:
Frank, Pettit
Primary Class:
446/418
Other Classes:
181/131, 446/472, D24/134
International Classes:
A63H33/30
US Patent References:
1305237
1811558Locator of abnormal sounds and vibrations
2189853Flexible support for rattles
2570740Ticking toy watch