Method and apparatus for perforating sheet material
United States Patent 2385246

Inventors:
Neumann, Arthur E.
Publication Date:
09/18/1945
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Assignee:
Wilsey
Ruth, Ann Wilsey
Primary Class:
219/384
Other Classes:
315/300, 315/180, 347/161, 315/247, 156/253, 313/351, 313/147, 315/239, 315/277, 315/278, 313/149, 101/24, 315/357
International Classes:
B26F1/28; B26F1/00