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Patent:US1263881


Patent:US 1263881
Title:Combined type writing and computing machine
Date:23.04.1918
Place:Brooklyn und New York
Country:USA
Person:Emmit G. Griffith
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1263881 (espacenet),  US1263881 (uspto)


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