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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH164581


Patent:CH 164581
Title:Machine à calculer
Date:15.10.1933
Place:Italien
Country:Switzerland
Person:
Company:Olivetti (P)
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 CH164581


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Aus der Patentschrift CH164581

This is the Swiss registration of Patent:IT299897 filled by Ladislao Delfin (Ivrea) January 16, 1931