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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2014013


Patent:US 2014013
Title:Calculating Machine
Date:10.09.1935
Place:
Country:USA
Person:Avery, Harold (P) et al
Company:Marchant (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2014013 (espacenet),  US2014013 (uspto)


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Aus der Patentschrift US2014013