Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751793 | Freight car door construction | Glenn L. Wright | 1988-06-21 |
| 4377304 | Door lock | Charles W. Mayfield | 1983-03-22 |
| 4353187 | Door repair method and repair section therefor | Charles W. Mayfield | 1982-10-12 |
| 4220098 | Railway car door crank actuating mechanism | William D. Mundinger | 1980-09-02 |