Across
- 2. this engineer has made welding
- 4. they tracked the energy usage
- 6. they made the truly hands-free phones
- 7. fixxed inventions
- 8. they made the telephone
- 9. this engineer makes earthquake detectors
Down
- 1. this engineer made the robotic arm
- 3. they made a steam engine
- 5. this engineer made the sonar
- 10. they made the heat pump