Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8842042 | Satellite ephemeris error | Simon Robert Duck, David Patrick Haworth | 2014-09-23 |
| 6677893 | Method and apparatus for locating the source of unknown signal | Paul Edmonds, Simon Robert Duck, David Patrick Haworth, Christopher Griffin | 2004-01-13 |