Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6886470 | Rail welderhead shear apparatus | Rene Hunziker | 2005-05-03 |
| 5791033 | Railroad car truck spring jack | Henry F. Ninstil, Stefan T. Pendrick | 1998-08-11 |
| 5756903 | Track strength testing vehicle with a loaded gage axle and loaded gage axle apparatus | Stefan T. Pendrick | 1998-05-26 |