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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB224549


Patent:GB 224549
Title:Improvements in and relating to calculating machines
Date:07.04.1926
Place:
Country:Great Britain
Person:Bernhard Weiner
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB224549


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Aus der Patentschrift GB224549