Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6997614 | Elastic rubber bearing | Helmut Kammel, Bernd Kümper | 2006-02-14 |
| 6378853 | Rubber bearing with characteristic behaviour which differs in the direction of the circumference | Helmut Kammel | 2002-04-30 |