Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279395 | Railway car brake system | William L. Willis, John A. Krug | 1994-01-18 |
| 5159882 | Railway car underbody structure and method | John A. Krug, William L. Willis, Paul J. Dumser, William U. Casseau, Laurence E. Culligan +1 more | 1992-11-03 |