Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D413286 | Tire tread | Dale Edward Umstot, Max Harold Dixon, Douglas Wayne Dom, Terrence Lee Parsons, Joseph Henry Laco | 1999-08-31 |
| D320964 | Tire tread and buttress | Robert L. Crump, Ronald Thomas Harris | 1991-10-22 |