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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB652670


Patent:GB 652670
Title:comptometer-like adding machine
Date:25.04.1951
Place:
Country:Great Britain
Person:Webb, Christopher Frederick (P)
Company:Bell Punch (P) Co Ltd
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB652670


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Aus der Patentschrift GB652670