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This file consists of testimony and exhibits on behalf of Edison in the case of Edison v. Thomson, which involved conflicting claims over the incandescent lamp. Included are depositions, taken in October and November 1888, by Edison; employees Charles Batchelor, Martin N. Force, Arthur E. Kennelly, and John F. Ott; and William J. Jenks of the Standardizing Bureau of the Edison Electric Light Co. Elihu Thomson (1853-1937) was an inventor and scientist with over seven hundred patents in the electrical field. Along with Edwin J. Houston (1847-1914), he established the Thomson-Houston Electric Co. as major competitor to Edison's company until April 15, 1892, when it merged with the Edison General Electric Co. to become General Electric. Courtesy of the National Archives.