Phonograph or Speaking Machines, February 19, 1878

Item

Title

Phonograph or Speaking Machines, February 19, 1878

Author

Thomas A. Edison

Date Executed

1877-12-15

Date Filed

1877-12-24

Date Issued

1878-02-19

Type

Patent Issued

Subject

Phonographs and Sound Recording

Document ID

PAT200521

Has Format

https://iiif.archive.org/iiif/edisonpatent200521/manifest.json

Rights

Edison's patents are in the public domain and have been made available through the generosity of David Kovanen.

Publisher

The Thomas A. Edison Papers