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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2312797


Patent:US 2312797
Title:Locking mechanism for the setting members of calculating machines
Date:02.03.1943
Place:Atvidaberg
Country:USA
Person:Carlström, Bengt
Company:AB Facit (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2312797 (espacenet),  US2312797 (uspto)


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