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Patent:US3604621


Patent:US 3604621
Title:Improved Slide Rule Arrangement
Date:14.09.1971
Place:
Country:USA
Person:Walter S. Drummond
Company:
Internal Links:Rechenschieber
Keywords:
Link to the patent office:
(without guarantee)
 US3604621 (espacenet),  US3604621 (uspto)


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Aus der Patentschrift US3604621