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Patent:US2236792


Patent:US 2236792
Title:Calculating Apparatus
Date:01.04.1941
Place:
Country:USA
Person:Jewett Furber Henry
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2236792 (espacenet),  US2236792 (uspto)


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Aus der Patentschrift US2236792