Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5845579 | Movable thresholds and railway platform barrier doors | Keith W. Langley, Derek Tate, Mark Hemmings | 1998-12-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5845579 | Movable thresholds and railway platform barrier doors | Keith W. Langley, Derek Tate, Mark Hemmings | 1998-12-08 |