Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878882 | Cross groove constant velocity ratio universal joints | Hans-Heinrich Welschof | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878882 | Cross groove constant velocity ratio universal joints | Hans-Heinrich Welschof | 1989-11-07 |