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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2525352


Patent:US 2525352
Title:Calculating Machine
Date:10.01.1950
Place:
Country:USA
Person:Herzstark, Curt (P)
Company:
Internal Links:Siehe Curta
Keywords:
Link to the patent office:
(without guarantee)
 US2525352 (espacenet),  US2525352 (uspto)


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