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Patent:US1920024


Patent:US 1920024
Title:Integrating Mechanism
Date:25.07.1933
Place:
Country:USA
Person:H. J. Stehl
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US1920024 (espacenet),  US1920024 (uspto)


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Aus der Patentschrift US1920024