Technology and inventions, part 1

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Across
  1. 2. Happening now; existing at the present time, also a flow of water or air in a particular direction.
  2. 4. Unable to hear anything; lacking the ability to hear.
  3. 7. Many; a large number of something.
  4. 9. Being the first to develop or use new ideas or methods.
  5. 11. A brass musical instrument with a loud sound, often used in bands or orchestras.
  6. 12. Something that has been increased or made larger, often referring to reality or data.
  7. 14. A chemical element found in all living things; used in many industrial processes and fuels.
  8. 15. A legal right to make or sell an invention for a certain period.
Down
  1. 1. To extend over a large area; to distribute widely.
  2. 3. To hang something from above; to temporarily stop or delay something.
  3. 5. Easy to reach or use for everyone.
  4. 6. To stop something from happening.
  5. 8. The first letter of a name or the beginning of something.
  6. 10. The act of sending signals, data, or information from one place to another.
  7. 13. To give or allow someone to have something, often money or permission.