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| Keywords: Phonautograph - Scott 1859.jpg en A phonautograph drawn by Édouard-Léon Scott de Martinville fr Dessin d'un phonautographe par Édouard-Léon Scott de Martinville Certificate of addition to Scott de Martinville's patent 31470 dated 29 July 1859 and preserved by INPI the French patent office Downloaded from http //www firstsounds org/press/032708/images/print/scott-1869-big-detail jpg firstsounds org Édouard-Léon Scott de Martinville 1817 “1879 1859 PD-old-100 Phonautographs | ||||
