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| | Freons ( CFC´s ) - aerosol propellants, refrigerants, fire extinguishers, and lubricants, - Kettering and Dental Caries |
 | | Charles F. Kettering became a counselor in an "Advisory Committee on Research in Dental Caries" of the American Dental Association. |
 | | Until they became famous for the "Freon" type refrigerants, the names of Charles Kettering and Thomas Midgley were widely known for their leaded gasoline battle. |
 | | Charles Frank KETTERING, assignor to Frigidaire Corporation, Dayton, Ohio: "Refrigerating apparatus", US Patent 1,955,192; filed Dec. 30, 1931; patented Apr. 17, 1934 |
| www.fluoride-history.de /p-freon.htm (2628 words) |
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