Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4318649 | Locking mechanism for B deck of auto-rack railway car | David J. Roldness, Robert L. Barkhimer | 1982-03-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4318649 | Locking mechanism for B deck of auto-rack railway car | David J. Roldness, Robert L. Barkhimer | 1982-03-09 |