Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4454823 | Bulk freight rail car with metallized interior surfaces | William B. Culler, Paul Wiesner | 1984-06-19 |
| 4451188 | Coil car with shiftable trough assemblies | Ryan M. Smith | 1984-05-29 |
| 4444123 | Curved roof hooper car | Ryan M. Smith, William B. Culler, Paul Wiesner | 1984-04-24 |