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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB190823895


Patent:GB 190823895
Title:Improvements in Calculating Machines
Date:11.02.1909
Place:
Country:Great Britain
Person:Trinks, Franz (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB190823895


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Aus der Patentschrift GB190823895