Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644215 | Worm drive mechanism for gear operated door | — | 2003-11-11 |
| 4220098 | Railway car door crank actuating mechanism | Oliver J. Jenkins | 1980-09-02 |
| RE30388 | Railroad car with depressed floor | Richard C. Snyder | 1980-09-02 |