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Die große Enzyklopädie des mechanischen Rechnens

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Patent:DE647638


Patent:DE 647638
Title:Rechenmaschine o.dgl
Date:14.07.1937
Place:Detroit
Country:Germany
Person:
Company:Burroughs (P) Adding Machine Comp.
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Link to the patent office:
(without guarantee)
 DE647638


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Aus der Patentschrift DE647638