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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2819526


Patent:US 2819526
Title:Calculator
Date:14.01.1958
Place:
Country:USA
Person:Brown Jr George Harold
Company:RCA (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2819526 (espacenet),  US2819526 (uspto)