Image: Theatrophone - Clement Ader 1881
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Description: Théâtrophone. Plan device théatrophone at the Opera during the World Exhibition in Paris (1881).
Title: Theatrophone - Clement Ader 1881
Credit: Th du Moncel, Le téléphone, Librarie Hachette. Found at A. Lange's Histoire de la télévision
Author: Clément Ader (1841-1926)
Permission: Public domain, since author died more than 70 years ago.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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