Charles Franklin Kettering (August 29, 1876 - November 24 or November 25, 1958) was an American inventor and the holder of over 300 patents. He was a founder of Delco, and was head of research for General Motors for 27 years from 1920 to 1947. Among his most widely used automotive inventions were the electrical starting motor and leaded gasoline. In association with the DuPont Chemical Company, he was also responsible for the invention of Freon refrigerant for refrigeration and air conditioning systems. as well as for the development of Duco lacquers and enamels, the first practical colored paints for mass-produced automobiles
Medical practitioner who is regarded as the father of medicine
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