Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6753812 | Time-gated delay lock loop tracking of digital television signals | James J. Spilker, Jr. | 2004-06-22 |
| 6727847 | Using digital television broadcast signals to provide GPS aiding information | James J. Spilker, Jr., Jimmy K. Omura, Matthew Dalton Pierce | 2004-04-27 |
| 6717547 | Position location using broadcast television signals and mobile telephone signals | James J. Spilker, Jr., Jimmy K. Omura | 2004-04-06 |