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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB190615532


Patent:GB 190615532
Title:Improvements in Calculating Machines
Date:25.04.1907
Place:
Country:Great Britain
Person:Rinsche, Frank Charles (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB190615532


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Aus der Patentschrift GB190615532