Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7631708 | Method and apparatus for horizontal drilling and oil recovery | — | 2009-12-15 |
| 4696238 | End structure for railway car | Steven L. Jantzen, Walter E. O'Leary, John A. Krug | 1987-09-29 |
| 4690071 | Truss end structure for stub sill hopper cars | Steven L. Jantzen | 1987-09-01 |
| 4563957 | Car bottom-to-side sill connection | George M. Reed, Arnold Schlobohm | 1986-01-14 |
| 4368927 | Hand brake release apparatus | Steven L. Jantzen, James R. Zimmerle | 1983-01-18 |
| 4368928 | Inertial hand brake release apparatus | Steven L. Jantzen, James R. Zimmerle | 1983-01-18 |