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Patent:US1278812


Patent:US 1278812
Title:Combined typewriting and computing machine
Date:10.09.1918
Place:Hartford, CT und New York
Country:USA
Person:Hanson, Hans (P)
Company:Underwood (P) Computing Machine Co
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Keywords:
Link to the patent office:
(without guarantee)
 US1278812 (espacenet),  US1278812 (uspto)


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