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Patent:US1638984


Patent:US 1638984
Title:Radial averaging Planimeter
Date:16.08.1927
Place:
Country:USA
Person:Cunningham Arthur B
Company:
Internal Links:Planimeter, Radialplanimeter
Keywords:
Link to the patent office:
(without guarantee)
 US1638984 (espacenet),  US1638984 (uspto)


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Aus der Patentschrift US1638984