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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH267435


Patent:CH 267435
Title:Machine à écrire et à calculer.
Date:31.03.1950
Place:USA
Country:Switzerland
Person:
Company:Underwood (P)
Internal Links:
Keywords:
Link to the patent office:
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 CH267435


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Aus der Patentschrift CH267435