Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6030141 | Ball-and-socket joint and device for assembling a ball-and-socket joint | Sabine Schmermbeck, Erhart Welchert, Horst Kozlowski | 2000-02-29 |
| 5672023 | Ball joint | Erhard Welchert | 1997-09-30 |