Mary Kenner invented the sanitary belt which was not patented until thirty years later in 1956 because she was a black woman. She held four other patents including the tissue holder, held with her sister.
Black History Everyday 24/7/365, 366 in leap year. New fact everyday. Alexa skill too.
Mary Kenner invented the sanitary belt which was not patented until thirty years later in 1956 because she was a black woman. She held four other patents including the tissue holder, held with her sister.