Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884607 | Pneumatic tire tread pattern with lateral grooves having increasing groove angle towards shoulders | — | 1989-12-05 |
| 4848431 | Pneumatic tire for high speed driving | Kenichi Kobayashi | 1989-07-18 |