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Patent:US1517125


Patent:US 1517125
Title:Adding machine
Date:25.11.1924
Place:Providence, RI
Country:USA
Person:Patton, Ralph Clifton
Company:Precision Adding Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1517125 (espacenet),  US1517125 (uspto)


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