Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10352001 | Rail re-profiling method and apparatus | Donald R. Hughes | 2019-07-16 |
| 9834891 | Rail re-profiling method and apparatus | Donald R. Hughes | 2017-12-05 |
| 9617691 | Rail re-profiling method and apparatus | Donald R. Hughes | 2017-04-11 |