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Patent:US2693906


Patent:US 2693906
Title:Differential mechanism for calculating machines
Date:09.11.1954
Place:
Country:USA
Person:Butler, Thomas M. (P)
Company:Burroughs (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2693906 (espacenet),  US2693906 (uspto)


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Aus der Patentschrift US2693906