Great Black Innovators

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Across
  1. 3. / satellite system innovations
  2. 6. / spot test for identifying explosives
  3. 10. / electric microphone
  4. 11. / chips
  5. 13. / first clock
  6. 14. / fiber optics cables, caller ID, call waiting, touch telephone
Down
  1. 1. / automatic refrigeration system
  2. 2. / laser treatment for cataracts
  3. 4. / 300 uses for peanuts
  4. 5. / first surveillance system
  5. 7. / super soaker
  6. 8. / 3D glasses
  7. 9. / blood bank
  8. 12. / traffic signal
  9. 13. / wire resistor