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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2056579


Patent:US 2056579
Title:Calculating machine
Date:13.11.1929
Place:Oakland, Calif., USA
Country:USA
Person:Lerch, Gustav (P)
Company:
Internal Links:
Keywords:Addiermaschine
Link to the patent office:
(without guarantee)
 US2056579 (espacenet),  US2056579 (uspto)


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Bild aus US2056579

06. Okt. 1936