Mary Dixon Kies (March 21, 1752 – 1837) was an American inventor. On May 5, 1809, her patent for a new technique of weaving straw with silk and thread to make hats was signed by President James Madison.[1]
Some sources say she was the first woman to receive a US patent,[2][3] however other sources cite Hannah Slater in 1793,[4][5][6] or Hazel Irwin, who received a patent for a cheese press in 1808,[7][4] as the first.