Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833939 | Built-up connecting rod | Hans-Joachim Oberg | 1989-05-30 |
| 4805483 | Connecting rod with a shank composed of fiber composite material | Siegfried Brudgam, Dieter Roeper | 1989-02-21 |