Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6731237 | Deeply-integrated adaptive GPS-based navigator with extended-range code tracking | Donald E. Gustafson, John R. Dowdle | 2004-05-04 |
| 6693592 | Geographical navigation using multipath wireless navigation signals | John R. Dowdle, Donald E. Gustafson | 2004-02-17 |