Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6003256 | Roll-up stop/slow sign | H. Jeanne Leach, legal representative | 1999-12-21 |
| 5152091 | Highway sign | — | 1992-10-06 |
| 4291070 | Coating of particles | Stuart R. Brown, Eric A. Feest | 1981-09-22 |