Describing inventions

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Across
  1. 3. Using new ideas, methods, or creative thinking to make something better
  2. 4. Highly developed, complex, or showing a high level of skill
  3. 6. Great or important enough to be worthy of attention
Down
  1. 1. The rate at which goods are produced or work is completed
  2. 2. Inexpensive
  3. 5. Having great strength, force