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Patent:US1562963


Patent:US 1562963
Title:Automatic Planimeter
Date:24.11.1925
Place:
Country:USA
Person:O. G. Herm
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US1562963 (espacenet),  US1562963 (uspto)


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Aus der Patentschrift US1562963