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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH322886


Patent:CH 322886
Title:Rundbau-Rechenmaschine
Date:30.06.1957
Place:Liechtenstein
Country:Switzerland
Person:Herzstark, Curt (P)
Company:
Internal Links:Curta
Keywords:
Link to the patent office:
(without guarantee)
 CH322886


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Aus der Patentschrift CH322886