Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5596313 | Dual power security location system | Richard R. Jaffe | 1997-01-21 |
| 5280295 | Navigation and positioning system and method using uncoordinated beacon signals | David C. Kelley, David T. Rackley | 1994-01-18 |
| 5173710 | Navigation and positioning system and method using uncoordinated beacon signals | David C. Kelley, David T. Rackley | 1992-12-22 |