Title:
Educational toy
Document Type and Number:
United States Patent 2385197
Inventors:
Eisel, Vernon G.
Plaque It!
Sponsored by: Flash of Genius |
Publication Date:
09/18/1945
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Referenced by:
Export Citation:
Assignee:
Eisel, Vernon G.
Primary Class:
Other Classes:
242/613.300, 242/388.100
International Classes:
G09B25/00