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Patent:US2239363


Patent:US 2239363
Title:Integrating Apparatus
Date:22.04.1941
Place:
Country:USA
Person:R. W. Gilbert
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US2239363 (espacenet),  US2239363 (uspto)


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Aus der Patentschrift US2239363