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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH173800


Patent:CH 173800
Title:Machine à calculer.
Date:15.12.1934
Place:USA
Country:Switzerland
Person:
Company:Sundstrand (P)
Internal Links:
Keywords:
Link to the patent office:
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 CH173800


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Aus der Patentschrift CH173800