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Patent:US2112113


Patent:US 2112113
Title:Drawing Instrument
Date:22.03.1938
Place:
Country:USA
Person:Rabe, Karl (P)
Company:
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 US2112113 (espacenet),  US2112113 (uspto)


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Aus der Patentschrift US2112113