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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB190218853


Patent:GB 190218853
Title:Improvements in Calculating Machines
Date:28.05.1903
Place:New York
Country:Great Britain
Person:Howieson, John Thomas (P), Spiekerman, Frank (P)
Company:
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Link to the patent office:
(without guarantee)
 GB190218853


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Aus der Patentschrift GB190218853