Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5351625 | Weld support for railway tank car underbody construction | Laurence E. Culligan | 1994-10-04 |
| 5329859 | Increased strength railway tank for underframe construction and method with center sill pocket and weld support for pooling welding material | Laurence E. Culligan | 1994-07-19 |
| 5159882 | Railway car underbody structure and method | John A. Krug, William L. Willis, William U. Casseau, William T. Deet, Laurence E. Culligan +1 more | 1992-11-03 |
| 4890646 | Flexible siphon pipe for tank car | — | 1990-01-02 |
| 4220097 | Continuous cradle pad and skid for railway cars | Richard J. Wempe | 1980-09-02 |