Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7575202 | Apparatus and methods for providing relatively constant warning time at highway-rail crossings | Richard Bamfield, Martin Paget | 2009-08-18 |
| 7441727 | Highway-rail grade crossing controller with out of service mode | Richard Bamfield | 2008-10-28 |