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  2. Jul 21, 2009 · February 5: U.S. chemist Leo Baekeland (1863–1944) presents his invention, the first synthetic plastic known as Bakelite, to the American Chemical Society. February 12: The NAACP is founded by a group including W.E.B. Du Bois, Mary White Ovington, and Moorfield Storey.

  3. The three most important inventions developed during the decade included the automobile, the airplane, and the radio. Each new device transformed American life by greatly expanding the average citizen's opportunities for travel and communication. Henry Ford and other Americans improved the automobile, which had been invented in Germany.

  4. Jan 24, 2020 · The lie detector or polygraph machine is invented by James Mackenzie. The birth of the Teddy Bear. George Claude invented neon light. 1903 Edward Binney and Harold Smith co-invent crayons. Bottle-making machinery invented by Michael J. Owens. The Wright brothers invent the first gas motored and manned airplane.

    • Mary Bellis
    • Inventions Expert
  5. Mar 9, 2021 · In 1901, Gillette and Nickerson formed the American Safety Razor Company, and Gillette obtained a patent for the safety razor with disposable blades in 1904. The Wireless Guglielmo Marconi,...

  6. The United States issues its first patent to William Pollard of Philadelphia. His machine roves and spins cotton. 1794 Cotton Gin Eli Whitney patents his machine to comb and deseed bolls of cotton.