Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5192119 | Protective cover for emply/load valve actuator | Robert Shepherd | 1993-03-09 |
| 5039174 | Empty/load braking system for railroad cars and valve therefor | Robert G. Beacon, Robert Shepherd | 1991-08-13 |