10/20/1904 Edison, Thomas Alva -- Legal Statements and Testimony
(Edison Phonograph Works; Columbia Phonograph Co; American Graphophone Co; National Phonograph Co; Dyer, Frank Lewis; Bell, Chichester A; Mauro, Philip; McCoy, Joseph F) Patent infringement; Cylinder recording & reproducing apparatus [Attachment/Enclosure]
[QP034]  Legal Series -- Legal Department Records -- Phonograph -- Case Files: National Phonograph Company v. American Graphophone Company and Columbia Phonograph Company, General (Edison Patents 454,941, 397,280, and 430,278)
[QP034AAM014; TAEM 225:726]
Courtesy of Thomas Edison National Historical Park.
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