Black History Month: Inventors

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Across
  1. 2. Invented the first reversible baby stroller in 1899
  2. 4. Invented the automatic gear shift in 1932
  3. 6. Invented the three position traffic signal in 1923
  4. 8. Invented the automatic clothes dryer in 1892
  5. 9. Invented the first hair brush with synthetic bristles in 1898
  6. 10. Invented the ironing board in 1892
Down
  1. 1. Invented the automatic doors on elevators in 1887
  2. 3. Invented the first portable air conditioner in 1940
  3. 5. First African-American to earn a PhD in Nuclear Engineering
  4. 7. Patented an improved refrigerator design in 1891