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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US3073520


Patent:US 3073520
Title:Calculating Machine
Date:15.01.1963
Place:
Country:USA
Person:Bilde
Company:Facit (P)
Internal Links:integrating electronics for number entry and transfer btwn portions of calculator
Keywords:
Link to the patent office:
(without guarantee)
 US3073520 (espacenet),  US3073520 (uspto)


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Aus der Patentschrift US3073520