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