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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2188748


Patent:US 2188748
Title:Calculating machine
Date:30.01.1940
Place:Atvidaberg
Country:USA
Person:Carlström, Bengt
Company:AB Facit (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2188748 (espacenet),  US2188748 (uspto)


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