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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB332373


Patent:GB 332373
Title:Improvements in or relating to calculating apparatus
Date:24.07.1930
Place:
Country:Great Britain
Person:Jeffery Walton Barnes
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB332373


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Aus der Patentschrift GB332373