Device for supporting sheets of paper and the like
United States Patent 1739057

Inventors:
Bock, Charles S.
Publication Date:
12/10/1929
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Assignee:
ANDREW HOFFMAN MFG COMPANY
Primary Class:
40/658
Other Classes:
248/305, 248/307, 24/458
International Classes:
B42F15/06; G09F1/10; B42F15/00; G09F1/00