engineer job word puzzle

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Across
  1. 7. created the TV
  2. 9. made the great kite
  3. 10. made artificial skin
  4. 11. a man created an ordnance train kit
  5. 13. invented the steam engine
  6. 14. one of them created a computing device that can accurately detect the exact location of a sound through an array of microphones
  7. 17. made direct photon detection
  8. 18. potato gun
  9. 19. created the hypersonic air travel
  10. 21. air conditioning
  11. 24. made a pogo bed
  12. 25. one of them created the cotton gin
Down
  1. 1. created a reactor core
  2. 2. innovated or invented the internet
  3. 3. created circuit boards
  4. 4. built a jet engine
  5. 5. built nuclear reactors
  6. 6. can make reinforced concrete
  7. 8. made the interchangeable parts
  8. 12. made hydroplanes
  9. 15. made a dock wise vanguard
  10. 16. created artillery cannons
  11. 20. made search engines
  12. 22. lawn mower
  13. 23. built a gas lift