Punching and printing device
United States Patent 2189023

Inventors:
Ayres, Waldemar A.
Publication Date:
02/06/1940
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Assignee:
IBM
Primary Class:
400/93
Other Classes:
400/613, 400/135, 400/686, 400/132, 400/140, 234/37
International Classes:
B41J3/26; B41J3/00