Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10851436 | Method for joining steel rails with controlled weld heat input | Gregory Ryan Lehnhoff, Joseph Victor Kristan | 2020-12-01 |
| 9670570 | High carbon steel rail with enhanced ductility | Joseph Victor Kristan, Gregory Ryan Lehnhoff | 2017-06-06 |