[D9439-F]

https://edisondigital.rutgers.edu/folder/D9439-F

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Part Of: Document File Series -- 1894

[D9439-F] (D-94-39) Telephone

This folder contains correspondence concerning the technical and commercial development of the telephone. Included are letters inquiring about the status of telephone transmitter patents and a letter suggesting the development of an answering machine.

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Courtesy of Thomas Edison National Historical Park.

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