Keeping  in touch with Edison's aerophone, c1878. Artist: Unknown
même sujet

Thomas Alva Edison

Sujet

Keeping in touch with Edison's aerophone, c1878. Artist: Unknown

Légende

Keeping in touch with Edison's aerophone. Patented in 1878, Thomas Edison's aerophone was a device to amplify the volume of human speech.

Date

1964

Crédit

Photo12/Heritage Images/Keystone Archives

Notre référence

HRM19D70_120

Model release

Non

Licence

Droits gérés

Format disponible

50,0Mo (1,9Mo) / 41,8cm x 30,0cm / 4932 x 3545 (300dpi)

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