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Patent:US2011310


Patent:US 2011310
Title:Bichrome ribbon mechanism for computing machines
Date:13.08.1935
Place:Rockford, IL
Country:USA
Person:Anderson, Walter (P)
Company:Underwood (P) Elliott Fisher Comp.
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Link to the patent office:
(without guarantee)
 US2011310 (espacenet),  US2011310 (uspto)


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