Inventions and discoveries

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Across
  1. 4. 4.The man who invented the writing system for the blind and visually impaired.
  2. 5. 4.Inventor of the first telephone.
  3. 7. 6.Inventor of the first television.
  4. 8. 3.An invention that allowed a person to fly.
Down
  1. 1. 5.It protects us from drops of water.
  2. 2. 7.what did Pierre Michaud invent?
  3. 3. 2.Who discovered the first antibiotic in the world?
  4. 6. 1.The invention of hairdresser Alexander Godfroy.