Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876528 | Method of detecting a deflated tire on a vehicle | John C. Walker | 1989-10-24 |
| 4800940 | Vehicle wheels | Phillip N. Griffiths | 1989-01-31 |
| 4794968 | Tires | Phillip N. Griffiths | 1989-01-03 |