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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB190703685


Patent:GB 190703685
Title:Improvements in and relating to Calculating and the like Devices
Date:12.12.1907
Place:
Country:Great Britain
Person:Pugh, John Vernon (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB190703685


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Aus der Patentschrift GB190703685