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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB147115


Patent:GB 147115
Title:Improvements in calculating machines
Date:12.05.1921
Place:
Country:Great Britain
Person:Trinks, Franz (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB147115


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Aus der Patentschrift GB147115