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Patent:US1153820


Patent:US 1153820
Title:Adding-machine
Date:14.09.1915
Place:St. Louis
Country:USA
Person:Elmer E. Patten
Company:Leo Rassieur, Jr.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1153820 (espacenet),  US1153820 (uspto)


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