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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2381424


Patent:US 2381424
Title:Calculating Device
Date:07.08.1945
Place:
Country:USA
Person:Danielson Raymond W
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2381424 (espacenet),  US2381424 (uspto)


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Aus der Patentschrift US2381424