Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6456937 | Methods and apparatus for locomotive tracking | John R. Doner, Kevin N. Clyne | 2002-09-24 |
| 6421587 | Methods and apparatus for locomotive consist determination | John R. Doner | 2002-07-16 |