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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB101013


Patent:GB 101013
Title:Improvements in Calculating Machines
Date:18.01.1917
Place:
Country:Great Britain
Person:
Company:Soc. Chateau Freres (P) et Cie
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB101013


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Aus der Patentschrift GB101013