Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980894 | Method of managing interference during delay recovery on a train system | John Evans | 2005-12-27 |
| 6681161 | Voltage control on a train system | John Evans | 2004-01-20 |
| 6332107 | Efficient high density train operations | John Evans | 2001-12-18 |