Title:
Collapsible teeter-totter
United States Patent 2198947
Inventors:
Olson, Eddie V.
Publication Date:
04/30/1940
Export Citation:
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Assignee:
Olson, Eddie V.
Primary Class:
472/112
Other Classes:
472/113, 472/115
International Classes:
A63G11/00; A63G11/00
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