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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH198766


Patent:CH 198766
Title:Rechenmaschine.
Date:15.07.1938
Place:USA
Country:Switzerland
Person:
Company:Marchant (P)
Internal Links:
Keywords:
Link to the patent office:
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 CH198766


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Aus der Patentschrift CH198766