Mary Beatrice Davidson Skinner was an American inventor most noted for her development of the adjustable sanitary belt. Mary Kenner worked as a professional floral arranger and had four flower shops scattered around the DC area. She operated the business for 23 years after dropping out of college due to financial difficulties. During World War II, Mary found a job with the federal government, working for the Census Bureau and General Accounting Office. Mary Beatrice Davidson Kenner died on January 13, 2006, in Washington D.C. at the age of 93. Kenner didn’t receive any awards or formal recognition for her work. However, her inventions and contributions helped pave the way for subsequent innovations.