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Patent:US1489801


Patent:US 1489801
Title:Calculating machine
Date:08.04.1924
Place:Braunschweig, Deutschland
Country:USA
Person:Trinks, Franz (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1489801 (espacenet),  US1489801 (uspto)


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