Mary Dixon Kies- U.S. Patent # Unknown (lost in U.S. Patent Office fire of 1836)
For the first 144 years of its existence, women were not treated as equal citizens of the United States of America. In fact, they weren’t even allowed to vote until the women’s suffrage movement, led by Susan B. Anthony, Alice Paul and many others achieved the ratification of the Nineteenth Amendment to the U.S. Constitution in 1920.











