Andrew Freeman
From Wikipedia, the free encyclopedia
Andrew Freeman (born 1909 - died 1996), was the inventor of the electric block heater for automobiles.
Freeman first developed a block heater around 1940, and received U.S. Patent #2487326 on 8 November 1946.
An electrical engineering graduate of the University of North Dakota, Freeman also managed Minnkota Power Cooperative for forty years in the mid-to-late 20th century.
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