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Patent:US1329871


Patent:US 1329871
Title:Combined typewriting and computing machine
Date:03.02.1920
Place:New York
Country:USA
Person:Horatio Whiting
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1329871 (espacenet),  US1329871 (uspto)


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