Title:
Program device
United States Patent 2800539
Inventors:
Edminster, Robert E.
Shaver Jr., Jay C.
Publication Date:
07/23/1957
Export Citation:
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Assignee:
IBM
Primary Class:
200/46
Other Classes:
178/17R, 234/20, 235/61PM, 400/80
International Classes:
B41J3/50; B41J3/44
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US Patent References:
2540029Selectively controlled recording apparatus