Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487499 | Method for adjusting a pseudo-range model | Charles Abraham, Frank van Diggelen | 2002-11-26 |
| 6484097 | Wide area inverse differential GPS | Charles Abraham, Frank van Diggelen | 2002-11-19 |
| 6453237 | Method and apparatus for locating and providing services to mobile devices | Charles Abraham, Frank van Diggelen | 2002-09-17 |