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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US3451617


Patent:US 3451617
Title:Printing Calculating Machines
Date:24.06.1969
Place:
Country:USA
Person:Grip, Erik Konrad (P)
Company:Facit (P)
Internal Links:Facit 1051
Keywords:
Link to the patent office:
(without guarantee)
 US3451617 (espacenet),  US3451617 (uspto)


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Aus der Patentschrift US3451617