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Patent:US1581567


Patent:US 1581567
Title:Slide Rule
Date:20.04.1926
Place:
Country:USA
Person:J. E. Eshbaugh
Company:
Internal Links:Rechenschieber
Keywords:
Link to the patent office:
(without guarantee)
 US1581567 (espacenet),  US1581567 (uspto)


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Aus der Patentschrift US1581567