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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2386425


Patent:US 2386425
Title:Adding and subtracting mechanism
Date:09.10.1945
Place:
Country:USA
Person:Samuel Brand
Company:Ibm
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2386425 (espacenet),  US2386425 (uspto)


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Aus der Patentschrift US2386425