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