Parent Company:
General Motors from 1930-2005
Berkshire Partners from 2005-2010
Progress Rail from 2010-present
Currently known as:
Electro-Motive Diesel
Previously known as:
Electro-Motive Engineering Corporation (1922)
Electro-Motive Company (1922-1930)
Electro-Motive Division (1941-2004)