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Title:
Self-erasing memorandum pad
United States Patent 1480920
Inventors:
Weeden, Arthur W.
Publication Date:
01/15/1924
Export Citation:
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Assignee:
James, Mccoy D.
Primary Class:
434/410
International Classes:
B43L1/12
;
B43L1/00
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Download PDF 1480920
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