Binding hole punch
United States Patent 2985052
US Patent References:
/0345190.html
- - 0345190

Punching machine
- - 2260223

Multiple perforator
- - 2389105

Paper punch
- - 2524582

Paper punch
- - 2534094


Inventors:
Mentzer, James S.
George, Seeger
Jones, John E.
Fritz, William L.
Publication Date:
05/23/1961
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Assignee:
AMERICAN PHOTOCOPY EQUIP CO
Primary Class:
83/468.900
Other Classes:
83/632, 83/524, 83/522.220, 83/364, 83/522.180, 83/372, 83/571, 83/370, 83/618
International Classes:
B26F1/04; B26F1/02
US Patent References:
2558044Portable punching machine
2607421Perforator control mechanism
Foreign References:
GB190900874A