Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7209831 | GPS collision avoidance apparatus | Donald Patrick Hilliard, Michael Patrick Hilliard, Christina Ann Hilliard | 2007-04-24 |
| 6628239 | Variable scattering device | Donald Patrick Hilliard, Michael Patrick Hilliard | 2003-09-30 |
| 6433691 | Personal collision warning and protection system | Donald Patrick Hilliard, Michael Patrick Hilliard, Christina Ann Hilliard | 2002-08-13 |