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United States Patent 2484453
US Patent References:
/0461143.html
- - 0461143

Card index
- - 1774238

Blue print rack
- - 1910993

Hanger for duplicator stencils and the like
- - 2248027


Inventors:
Halverson, Henry M.
Publication Date:
10/11/1949
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Assignee:
Halverson, Henry M.
Primary Class:
211/46
Other Classes:
24/555, 211/124, 211/94.010
International Classes:
G03D13/10; G03D13/02