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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2942709


Patent:US 2942709
Title:Revolution coupling for fast running calculating machines
Date:28.06.1960
Place:
Country:USA
Person:Helmut Gelling
Company:Walther (P) Büromaschinen GmbH
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2942709 (espacenet),  US2942709 (uspto)


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Aus der Patentschrift US2942709