| Answer | Crossword Clue |
|---|---|
| OTIS | Inventor of safety device for elevators. |
| OTIS | Inventor of automatic safety device for elevators, 1854. |
| OTIS | Inventor of elevators' safety brakes. |
| OTIS | Elevator safety-device inventor. |
| ABS | Auto safety device, for short |
| TESLACOIL | Electrical device named for its inventor |
