Famous Inventors

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Across
  1. 5. Developed alternating current
  2. 7. Pioneered research on radioactivity, discovering polonium
  3. 9. Created the kaleidoscope
  4. 10. Developed frequency-hopping spread spectrum technology during WWII
  5. 12. Patented the first practical telephone
  6. 14. Invented Kevlar
  7. 17. Invented modern air conditioning
  8. 18. Developed flash freezing
  9. 20. Created the bagless vacuum cleaner using dual-cyclone technology
Down
  1. 1. Co-founded Apple
  2. 2. Developed the telegraph
  3. 3. Invented mechanical television
  4. 4. Invented the cotton gin
  5. 5. Created the first thermoelectric power generator and the first solar heating system for homes
  6. 6. Improved the assembly line for auto manufacturing
  7. 7. Invented 300 uses for peanuts
  8. 8. Developed the polio vaccine
  9. 11. Invented the chocolate chip cookie
  10. 13. Created ball point pen
  11. 15. Developed specialized hair products for African American women
  12. 16. Created game of basketball
  13. 19. Known for the incandescent light bulb, phonograph, and motion picture camera