Loose leaf binder
United States Patent 3080562
US Patent References:
/0680349.html
- - 0680349

Bookbinding
- - 1410000

Fastener
- - 1850376


Inventors:
John, Potts
Eremeldo, Cairelli
Publication Date:
03/05/1963
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Assignee:
WILSON JONES CO
Primary Class:
402/17
Other Classes:
402/78
International Classes:
B42F13/02; B42F13/00