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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB289382


Patent:GB 289382
Title:A new or improved method of operating an adding and subtracting totalizer and mechanism for carrying out the method
Date:24.07.1929
Place:
Country:Great Britain
Person:Shipley, Bernis (P)
Company:NCR (P)
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Keywords:
Link to the patent office:
(without guarantee)
 GB289382


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Aus der Patentschrift GB289382