Elisha Gray's telephone, as described in his patent caveat of 14th February 1876. The Speaking Telephone, New York, 1879 .

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archival, archive, bellcommunicationinventionelectricelectricalelectricity, elisha, graham, gray, grayamericaninventorcompetitoralexander, historical, history, patent, patentelishatelephoneelisha, telephone