Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815512 | Tread surface profile for pneumatic vehicle tires | Manfred Gerresheim, Jurgen Sommer, Hans-Jugen Vogler | 1989-03-28 |
| 4794970 | Vehicle wheel | Heinrich Huinink, Udo Frerichs | 1989-01-03 |