Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6459965 | Method for advanced communication-based vehicle control | Alan L. Polivka, James R. Egnot, Robert E. Heggestad, Jeffrey Baker | 2002-10-01 |
| 6374184 | Methods and apparatus for determining that a train has changed paths | Charles Zahm | 2002-04-16 |