Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D400130 | Tire tread | Leonard F. Blankenship, James G. Guspodin | 1998-10-27 |
| D400135 | Tire tread | Leonard F. Blankenship, James G. Guspodin | 1998-10-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D400130 | Tire tread | Leonard F. Blankenship, James G. Guspodin | 1998-10-27 |
| D400135 | Tire tread | Leonard F. Blankenship, James G. Guspodin | 1998-10-27 |