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Patent:US1858397


Patent:US 1858397
Title:Calculating Machine
Date:17.05.1932
Place:
Country:USA
Person:Friden, Carl Mauritz Fredrick (P)
Company:Marchant (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1858397 (espacenet),  US1858397 (uspto)


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Aus der Patentschrift US1858397