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Patent:US542511


Patent:US 542511
Title:Planimeter
Date:09.07.1895
Place:
Country:USA
Person:Willis, Edward (P)
Company:
Internal Links:Planimeter, Improved Willis Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US542511 (espacenet),  US542511 (uspto)


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Aus der Patentschrift US542511