Title:
Seal
Document Type and Number:
United States Patent 2140320
Inventors:
Frank, Keidel
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Sponsored by: Flash of Genius |
Publication Date:
12/13/1938
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Referenced by:
Export Citation:
Assignee:
Internat, Seal And Knot Protect
Primary Class:
Other Classes:
292/328
International Classes:
G09F3/03