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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB233640


Patent:GB 233640
Title:Adding and subtracting apparatus; transfermechanism
Date:06.10.1924
Place:
Country:Great Britain
Person:Bergmann, Jean (P)
Company:CBR (P)
Internal Links:CBR CBR, CBR
Keywords:Zahlenschieber
Link to the patent office:
(without guarantee)
 GB233640


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S. auch Patent:GB223227