Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4954837 | Terrain aided passive range estimation | Noel Collins | 1990-09-04 |
| 4939663 | Elevation map-referenced mechanism for updating vehicle navigation system estimates | — | 1990-07-03 |
| 4829304 | Map-aided navigation system employing TERCOM-SITAN signal processing | — | 1989-05-09 |
| 4220923 | Adaptive interference reduction system for crosstalk cancellation in a dual polarization system | Guy M. Pelchat | 1980-09-02 |