Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5092248 | Railway wagon retarder | — | 1992-03-03 |
| 4535872 | Retarders suitable for wagon speed control and having means for holding them in their operative condition | David E. Bick, Christopher F. Flippance | 1985-08-20 |