 It's Women's History Month and today we're talking about an amazing inventor, Margaret Knight. Margaret Knight invented a hundred products and has over 80 patents, but she's best known for her brown paper bag machine that produces the brown paper bags as we know them today. Male competitors doubted her and tried to steal her idea, but she was able to protect it through her bulletproof patent. Margaret is the first woman to have a US patent written in her own name.