Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7209831 | GPS collision avoidance apparatus | Donald Patrick Hilliard, Glenda Esnardo Hilliard, Christina Ann Hilliard | 2007-04-24 |
| 6628239 | Variable scattering device | Donald Patrick Hilliard, Glenda Esnardo Hilliard | 2003-09-30 |
| 6433691 | Personal collision warning and protection system | Donald Patrick Hilliard, Glenda Esnardo Hilliard, Christina Ann Hilliard | 2002-08-13 |
| 6416019 | Precision parachute recovery system | Donald Patrick Hilliard | 2002-07-09 |
| 6338457 | Precision parachute recovery system | Donald Patrick Hilliard | 2002-01-15 |