Means for safeguarding bank notes, bonds, and like documents of value from fraudulent imitation
United States Patent 2255696

Inventors:
George, Clifford Sydney
Publication Date:
09/09/1941
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Assignee:
WATERLOW & SONS LTD
Primary Class:
250/488.100
Other Classes:
8/648, 8/919, 252/301.340, 283/92
International Classes:
B42D15/00; D21H21/44; D21H21/40