04/30/1883 Force, Martin N -- Legal Statements and Testimony
(Edison Lamp Co; New York Herald; Carman, George E; Man, Albon; Batchelor, Charles; Swan, Joseph Wilson; Dyer, Richard Nott; Edison, Thomas Alva; Sawyer, William Edward) Cellulose, resins, and related products; Incandescent lamp
[W100DIA]  National Archives, Washington, D.C.: Records of the Patent and Trademark Office (Record Group 241) -- Patent Interference Files -- Edison v. Maxim v. Swan -- Testimony and Exhibits on Behalf of Edison
[W100DIE; TAEM 0:0]
Courtesy of the National Archives.