Gyroscopic tops
United States Patent 2794294
US Patent References:
/0188095.html
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Inventors:
Frangos, Everett W.
Publication Date:
06/04/1957
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Assignee:
Frangos, Everett W.
Primary Class:
446/235
Other Classes:
446/250
International Classes:
A63H1/00
US Patent References:
2107672Magnetic hooking game
2337334Toy top
2632977Self-righting and walking pull toy
2645881Top