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Title:
Alphabet educational toy
United States Patent 3407514
Inventors:
Alpha, Christian
Publication Date:
10/29/1968
Export Citation:
Click for automatic bibliography generation
Assignee:
Earl, Barr L.
Primary Class:
434/174
Other Classes:
446/69, D19/64
International Classes:
G09B17/00; G09B17/00
View Patent Images:
Download PDF 3407514         PDF help
US Patent References:
2275711Safety signal
0595455N/A
0264066N/A
0261912N/A
Foreign References:
GB396175A




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