Key vocabulary - Crossword

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Across
  1. 3. small part of the bicycle pushed with the foot
  2. 4. official register of an invention
  3. 7. the steering bar of a bicycle
  4. 8. circular object connected to an axle
Down
  1. 1. a new thing or process
  2. 2. a device that makes a vehicle go slower
  3. 5. rubber ring fitted around the wheel
  4. 6. seat of the bicycle or motorcycle