"Famous Inventors and Their Inventions"

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Across
  1. 1. Inventor of the telegraph
  2. 2. Inventor of the airplane
  3. 5. Inventor of the lightbulb
  4. 6. Inventor of the telephone
  5. 7. Inventor of the steamboat
  6. 8. Inventor of the assembly line
Down
  1. 1. Inventor of the radio
  2. 2. Inventor of the cotton gin
  3. 3. Inventor of the printing press
  4. 4. Inventor of the AC motor