catoothpaste013119-5.jpg
Joseph C. Muhler presents toothpaste and toothbrushes to two of the 12,000 young volunteers who took part in tests of a stannous fluoride toothpaste. Muhler and William Nebergall, who developed and patented the formula now used in Crest toothpaste, will be inducted into the National Inventors Hall of Fame this spring.