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Die große Enzyklopädie des mechanischen Rechnens

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Patent:CH131137


Patent:CH 131137
Title:Rechenapparat
Date:02.10.1928
Place:Frenkendorf, Basel
Country:Switzerland
Person:Schneider-Steiner, Theophil (P)
Company:
Internal Links:
Keywords:Rolle, Multiplikation, Tabelle
Link to the patent office:
(without guarantee)
 CH131137


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