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Patent:US1285156


Patent:US 1285156
Title:Adding machine
Date:19.11.1918
Place:Kansas City
Country:USA
Person:Benjamin P. Hayes Frank D. Laughlin
Company:Automatic Bookkeeping Register Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1285156 (espacenet),  US1285156 (uspto)


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