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Patent:US1053943


Patent:US 1053943
Title:Adding and writing machine
Date:18.02.1913
Place:Poplar Bluff, MO und St. Louis
Country:USA
Person:Samuel G. Dorman William H. Clayton
Company:Dalton (P) Adding Machine Comp.
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Link to the patent office:
(without guarantee)
 US1053943 (espacenet),  US1053943 (uspto)


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