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Patent:US2455902


Patent:US 2455902
Title:Calculating and aerial navigation instrument
Date:07.12.1948
Place:
Country:USA
Person:Cockrell William D
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2455902 (espacenet),  US2455902 (uspto)


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Aus der Patentschrift US2455902