| Clue | Source | Date |
|---|---|---|
| Truck stopper | Universal | 11 Nov 2020 |
| Bus stopper | The Washington Post | 21 Jun 2020 |
| Bus stopper | LA Times Daily | 21 Jun 2020 |
| Expose rupture in report such as George might deploy | The Telegraph Toughie | 27 May 2016 |
| Plane device | ||
| Mechanical device that operates by compression | ||
| Westinghouse's invention: 1868 | ||
| Invention of 1868 | ||
| Mechanical device that operates by compression | ||
| Device in a bus or railroad car. |