Section 1 Chapter 19 Crossword Puzzle

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Across
  1. 4. patented the telephone.
  2. 5. inventor interested in the uses of electricity.
  3. 6. inventors of the first motorized airplane.
  4. 7. first person to implement the moving assembly line in manufacturing.
Down
  1. 1. a period of rapid growth in the U.S. manufacturing in the late 1800s.
  2. 2. exclusive rights to make or sell inventions.
  3. 3. a way to manufacture steel quickly and cheaply by blasting hot air through melted iron to quickly remove impurities.