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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2435133


Patent:US 2435133
Title:Graphic Calculator
Date:27.01.1948
Place:
Country:USA
Person:Durand, F. (P)
Company:
Internal Links:Rechenschieber
Keywords:
Link to the patent office:
(without guarantee)
 US2435133 (espacenet),  US2435133 (uspto)


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Aus der Patentschrift US2435133