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Patent:US1260632


Patent:US 1260632
Title:Calculating machine
Date:26.03.1918
Place:Brooklyn und Wilkes-Barre, PA
Country:USA
Person:Ambrosius Briechle
Company:Adder Machine Comp.
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Link to the patent office:
(without guarantee)
 US1260632 (espacenet),  US1260632 (uspto)


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