Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6877671 | Between-rails roadway for road-rail crossings | Dominicus Bruyn, Frank Drayton Williams | 2005-04-12 |
| 5899379 | Interface strip for road/rail crossing | Dominicus Bruyn, Frank Drayton Williams | 1999-05-04 |