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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB254255


Patent:GB 254255
Title:Improvements in or relating to keyboard mechanism especially adapted for use with calculating machines
Date:08.04.1927
Place:
Country:Great Britain
Person:
Company:Optische Anstalt C. P. Goerz (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB254255


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Aus der Patentschrift GB254255