Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807774 | Greaseless fulcrum for a railcar door | Robert T. Jackson | 2004-10-26 |
| 6647896 | Greaseless hanger assembly for a railcar door | Robert T. Jackson | 2003-11-18 |
| 6463861 | Anti-drift retarder for gear operated door | — | 2002-10-15 |