Inventions - September Crossword Solution

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Across
  1. 3. Invented the first MP3 player. (6,8)
  2. 8. Walter Hunt patented this item in the 1840s. (6,3)
  3. 9. Temperature gauge was invented by Evangelista Torricelli. (9)
  4. 12. Invented the microwave. (5,7)
  5. 14. Charles Fey manufactured the liberty bell in the 1900s. (4,7)
  6. 16. Invented by Percy Shaw. (4,4)
  7. 17. David Brewster invented swiftly changing pattern maker in 1816. (12)
  8. 18. Invented the musical synthesizer in 1970. (6,4)
  9. 19. Charles Strite patented this pop-up breakfast maker in 1919. (7)
Down
  1. 1. Humphry Davy invented this in the early 19th century. (6,4)
  2. 2. 'Cow in the Can' patented by John Meyenberg in 1884? (10,4)
  3. 4. The Montgolfier brothers invented this. (3,3,7)
  4. 5. The Meccano construction system was created by this engineer and inventor. (5,6)
  5. 6. Invented the wireless telegraph. (7)
  6. 7. Analytical geometry was invented by this philosopher and mathematician. (4,9)
  7. 10. Hans Jansen invented this instrument. (10)
  8. 11. Invented and patented by Johan Edvard Lundstrom. (6,5)
  9. 13. Invented by John Joseph Merlin in 1760? (6,5)
  10. 15. Georges de Mestral invented a hoop and loop fastening system. (6)