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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US1206113


Patent:US 1206113
Title:Calculating Machine
Date:28.11.1916
Place:
Country:USA
Person:Hopkins, Hubert (P)
Company:
Internal Links:Moon-Hopkins
Keywords:
Link to the patent office:
(without guarantee)
 US1206113 (espacenet),  US1206113 (uspto)


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Aus der Patentschrift US1206113