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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB147114


Patent:GB 147114
Title:Improvements in calculating machines
Date:02.06.1921
Place:
Country:Great Britain
Person:Trinks, Franz (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB147114


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Aus der Patentschrift GB147114