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Electro-Motive Diesel, Inc., also referred to as "EMD", is owned by Caterpillar through its wholly owned subsidiary Progress Rail Services Corporation. The company designs, manufactures and sells diesel-electric locomotives and diesel power engines under the Electro-Motive Diesel brand.2 EMD offers an extensive range of locomotive products in the rail industry.3 Electro-Motive Diesel, Inc. traces its roots to the Electro-Motive Engineering Corporation, founded in 1922. In 1930, General Motors Corporation purchased the Winton Engine Co. and Winton's primary customer of gasoline engines, the Electro-Motive Company (a manufacturer of gasoline-electric self-propelled rail cars), combining the two to form GM's Electro-Motive Division (EMD) on January 1, 1941. In 2005, GM sold EMD to Greenbriar Equity Group LLC and Berkshire Partners LLC, which formed Electro-Motive Diesel, Inc., to facilitate the purchase. On August 2, 2010, Progress Rail Services Corporation completed the purchase of Electro-Motive Diesel, Inc. from Greenbriar, Berkshire, et al. making Electro-Motive Diesel, Inc. a wholly owned subsidiary of Progress Rail Services Corporation (itself a subsidiary of Caterpillar Inc).
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