Title:
Child's book
United States Patent 2548043
US Patent References:
Loose-leaf binder book
- - 2186436

/2272858.html
- - 2272858


Inventors:
Fritz, Muhlhauser
Publication Date:
04/10/1951
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Assignee:
Fritz, Muhlhauser
Primary Class:
281/42
Other Classes:
283/63.100, 273/153R
International Classes:
A63H33/38