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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH213462


Patent:CH 213462
Title:Rechenmaschine.
Date:15.02.1941
Place:USA
Country:Switzerland
Person:
Company:Marchant (P)
Internal Links:
Keywords:
Link to the patent office:
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 CH213462


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Aus der Patentschrift CH213462