Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5834914 | Railroad crossing gate mechanism control system | Donald L. LeVoir | 1998-11-10 |
| 5737173 | Railroad track circuit vital relay control | Daniel T. Ross, Brian Holt | 1998-04-07 |
| 5451857 | Temperature compensated, regulated power supply and battery charger for railroad signal use | — | 1995-09-19 |