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National Archives, Washington, D.C.: Records of the Patent and Trademark Office (Record Group 241) -- Patent Interference Files -- Edison v. Maxim v. Swan -- Testimony on Behalf of Swan
[W100DIZ]

This file consists of testimony on behalf of Joseph W. Swan in the case of Edison v. Maxim v. Swan, which involved conflicting claims over who invented the incandescent lamp. The litigants were Edison; Hiram S. Maxim (1840-1916), former chief engineer of the United States Electric Lighting Co. who had emigrated to Great Britain in 1882; and British inventor Joseph W. Swan (1828-1914). Testifying on behalf of Swan were former Menlo Park employees Samuel D. Mott (1852-1930), his brother Charles P. Mott (d. 1908), and Albert B. Herrick (1860-1938). The testimony in the Patent Office file is handwritten, and Herrick's testimony is incomplete.

Samuel Mott entered Edison's employ in September 1879 and assisted in the preparation of many of his patent drawings. In 1881 he was transferred to the Fifth Avenue office of the Edison Electric Light Co. in New York City. He left Edison's employ in June 1882 and subsequently worked for Stephen D. Field, Edward A. Callahan, the Western Electric Co., and the Pope Manufacturing Co. An inventor in his own right, he received thirty-six patents for inventions ranging from an electric cigar lighter to aeronautical devices. Charles Mott worked as an assistant to Edison's personal secretary, Stockton L. Griffin, and Griffin's successor, Samuel Insull. Herrick worked at the Menlo Park laboratory from 1879 until 1881. He was chief electrician for Bergmann & Co. and its successor company, Edison General Electric, from 1886 until 1892.

Related interference records can be found in the Litigation Series in Thomas A. Edison Papers, Part II (1879-1886).

Courtesy of the National Archives.

Document Count: 30
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12/06/1883 Mott, Charles Peters -- Legal Statements and Testimony
12/07/1883 Mott, Charles Peters -- Legal Statements and Testimony
12/08/1883 Mott, Charles Peters -- Legal Statements and Testimony
12/13/1883 Mott, Charles Peters -- Legal Statements and Testimony
(U.S. Patent Office; Dean, Charles L; Upton, Francis Robbins; Swan, Joseph Wilson; Edison, Thomas Alva; Carman, William) Patent interference; Research and development; Electric light and power
12/14/1883 Mott, Charles Peters -- Legal Statements and Testimony
(Witter, William Ciitus; Swan, Joseph Wilson; Tomlinson, John Canfield; Dyer, Richard Nott; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
12/15/1883 Mott, Charles Peters -- Legal Statements and Testimony
(Swan, Joseph Wilson; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
12/18/1883 Mott, Charles Peters -- Legal Statements and Testimony
(Batchelor, Charles; Witter, William Ciitus; Swan, Joseph Wilson; Tomlinson, John Canfield; Dyer, Richard Nott; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
12/19/1883 Mott, Charles Peters -- Legal Statements and Testimony
(Batchelor, Charles; Swan, Joseph Wilson; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
12/26/1883 Mott, Charles Peters -- Legal Statements and Testimony
(Batchelor, Charles; Witter, William Ciitus; Swan, Joseph Wilson; Tomlinson, John Canfield; Dyer, Richard Nott; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
12/27/1883 Mott, Charles Peters -- Legal Statements and Testimony
12/28/1883 Mott, Charles Peters -- Legal Statements and Testimony
01/29/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
01/30/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Telegraphic Journal; Mott, Charles Peters; Edison, Thomas Alva; Wilber, Zenas Fisk) Patent interference; Research and development; Electric light and power
02/05/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
02/06/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Edison Electric Light Co; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
02/07/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Mott, Charles Peters; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
02/13/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
02/14/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Batchelor, Charles; Swan, Joseph Wilson; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
02/15/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Tomlinson, John Canfield) Patent interference; Research and development; Electric light and power
02/16/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Witter, William Ciitus; Swan, Joseph Wilson; Tomlinson, John Canfield; Dyer, Richard Nott; Edison, Thomas Alva; Wilber, Zenas Fisk) Patent interference; Research and development; Electric light and power
02/19/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
02/20/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Telegraphic Journal; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
02/21/1884 Mott, Samuel Dimmick -- Legal Statements and Testimony
(Havemeyer, Charles W; Swan, Joseph Wilson; Tomlinson, John Canfield; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
02/26/1884 Herrick, Albert Bledsoe -- Legal Statements and Testimony
02/27/1884 -- Legal Statements and Testimony
(Herrick, Albert Bledsoe; Jehl, Francis; Sprengel, Hermann Johann Philipp; Scribner's Magazine; Edison, Thomas Alva; Crookes, William) Patent interference; Research and development; Electric light and power
02/28/1884 Herrick, Albert Bledsoe -- Legal Statements and Testimony
(Scientific American; Popular Science Monthly; Upton, Francis Robbins; Swan, Joseph Wilson; Tomlinson, John Canfield; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
02/29/1884 Herrick, Albert Bledsoe -- Legal Statements and Testimony
(Mott, Samuel Dimmick; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
03/01/1884 -- Legal Statements and Testimony
(Herrick, Albert Bledsoe; Witter, William Ciitus; Swan, Joseph Wilson; Tomlinson, John Canfield; Dyer, Richard Nott; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power
03/25/1884 Herrick, Albert Bledsoe -- Legal Statements and Testimony
03/26/1884 Herrick, Albert Bledsoe -- Legal Statements and Testimony
(Batchelor, Charles; Tomlinson, John Canfield; Edison, Thomas Alva) Patent interference; Research and development; Electric light and power [Incomplete]