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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US1520873


Patent:US 1520873
Title:Measuring and Integrating Mechanism
Date:30.12.1924
Place:
Country:USA
Person:C. C. Lauritsen
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US1520873 (espacenet),  US1520873 (uspto)


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Aus der Patentschrift US1520873