Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11408131 | Track-lifting and ballast-spreading apparatus | Tony Shirk, Daniel T. Marshall, Steven R. Walton, Derek DeMott | 2022-08-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11408131 | Track-lifting and ballast-spreading apparatus | Tony Shirk, Daniel T. Marshall, Steven R. Walton, Derek DeMott | 2022-08-09 |