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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH308019


Patent:CH 308019
Title:Rechenmaschine.
Date:30.06.1955
Place:Großbritannien
Country:Switzerland
Person:
Company:Bell Punch (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 CH308019


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Aus der Patentschrift CH308019