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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB190707018


Patent:GB 190707018
Title:A New or Improved Calculator
Date:23.03.1908
Place:
Country:Great Britain
Person:Leder, Ernst (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB190707018


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Aus der Patentschrift GB190707018