Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5351625 | Weld support for railway tank car underbody construction | Paul J. Dumser | 1994-10-04 |
| 5329859 | Increased strength railway tank for underframe construction and method with center sill pocket and weld support for pooling welding material | Paul J. Dumser | 1994-07-19 |
| 5159882 | Railway car underbody structure and method | John A. Krug, William L. Willis, Paul J. Dumser, William U. Casseau, William T. Deet +1 more | 1992-11-03 |