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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB190422824


Patent:GB 190422824
Title:Improvements in Calculating Machines
Date:15.12.1904
Place:USA
Country:Great Britain
Person:Ensign, Emory (P)
Company:
Internal Links:Ensign 75
Keywords:
Link to the patent office:
(without guarantee)
 GB190422824


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Aus der Patentschrift GB190422824