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| View Original: | Theatrophone_-_Clement_Ader_1881.JPG (283x502) | |||
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| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Theatrophone - Clement Ader 1881.JPG Théâtrophone Plan device théatrophone at the Opera during the World Exhibition in Paris 1881 Th du Moncel Le téléphone Librarie Hachette Found at A Lange's http //histv2 free fr/theatrophone/theatrophone htm Histoire de la télévision 1887 Clément Ader 1841-1926 Public domain since author died more than 70 years ago PD-old-80 Théâtrophone Telephone diagrams Exposition internationale d'Électricité | ||||
