National Brake & Electric Co. of Milwaukee, Wisconsin manufactured crawler tractors for a limited period around the late 1920s and early 1930s, at which time they were involved in a legal dispute with Caterpillar over patent rights.

(Click on images below to enlarge)

National 25 crawler at the Heidrick Ag History Center, Woodland, California, USA in 2005.

National 25 crawler at the Musee Maurice Dufresne, Azay-le-Rideau, France in 2007.


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