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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH182452


Patent:CH 182452
Title:Rechenmaschine.
Date:15.02.1936
Place:USA
Country:Switzerland
Person:
Company:Brunsviga (P)
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Keywords:
Link to the patent office:
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 CH182452


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Aus der Patentschrift CH182452