INVENTIONS

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Across
  1. 3. a machine that supplies motive power for a vehicle
  2. 5. the action of inventing
  3. 6. an act of squeezing
  4. 7. to produce for a first time
Down
  1. 1. to become better
  2. 2. a toothed wheel
  3. 4. a machine having two/more cylinders turn by handle
  4. 5. a person who has invented something