Patent filed for the tinfoil phonograph

Thomas Alva Edison filed for a patent for the tinfoil phonograph on 24 December 1877. The tinfoil phonograph entailed applying malleable foil to the phonograph cylinder for indentation by a stylus attached to a diaphragm.

Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878. This image is in the public domain in the United States because its copyright has expired. Courtesy of Wikimedia  Commons: https://commons.wikimedia.org/wiki/File:Edison_and_phonograph_edit1.jpg) Image: Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878. This image is in the public domain in the United States because its copyright has expired. Courtesy of Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Edison_and_p

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Associated Place(s)

Event date:

24 Dec 1877

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