Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658730 | Railroad correction apparatus | Edwin H. Reeves | 1987-04-21 |
| 4535700 | Device for tamping railroad track adjacent the tie ends thereof | — | 1985-08-20 |
| 4489658 | Ballast shoulder consolidator | — | 1984-12-25 |
| 4369712 | Railroad tamping machine | — | 1983-01-25 |
| 4367681 | Dynamic loading correcting device | John K. Stewart, Charles A. Shupe | 1983-01-11 |
| 4282815 | Railroad tamping machine | — | 1981-08-11 |
| 4203367 | Lift and line beam extension | John K. Stewart | 1980-05-20 |