Thomas Graf served as manager until November 1, 1915.
The company ceased operations shortly after the onset of World War I, although it continued to maintain a small office until Graf's resignation. This company was organized in December 1889 as Edison's personal business and was incorporated in New Jersey on May 5, 1900.
On June 30, 1932 the company ended its legal existence and became the Storage Battery Division of Thomas A. The division was sold to the Electric Storage Battery Company (now Exide Technologies) on July 20, 1960.
This company was organized in 1903 by former Edison employees James W. The company was purchased by the Edison Manufacturing Company in 1905 and officially dissolved in 1908, although its accounts show continued activity through mid-1911.
The company was officially dissolved on December 3, 1943.