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Patent:US2725969


Patent:US 2725969
Title:Ribbon reverse mechanism for listing calculators
Date:06.12.1955
Place:Butler, NJ
Country:USA
Person:Harvie J. Duke
Company:Monroe (P) Calculating Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US2725969 (espacenet),  US2725969 (uspto)


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