Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4466356 | Full diameter head shield construction for railway tank car | Richard B. Polley | 1984-08-21 |
| 4237928 | Low profile tapered sump for railway tank cars | — | 1980-12-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4466356 | Full diameter head shield construction for railway tank car | Richard B. Polley | 1984-08-21 |
| 4237928 | Low profile tapered sump for railway tank cars | — | 1980-12-09 |