a flat radiator. Gallery See also Du Pont family Indian (motorcycle) List of defunct United States automobile manufacturers History of the automobile Notes and references DuPont subsidiaries Luxury motor vehicle manufacturers Defunct motor vehicle manufacturers of the United States Companies based in Wilmington, Delaware 1919 establishments in Delaware 1932 disestablishments in Pennsylvania Vehicle manufacturing companies established in 1919 Vehicle manufacturing companies disestablished in 1932 Defunct manufacturing companies based in Delaware Vintage vehicles 1920s cars 1930s cars