Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336881 | Chain drive for internal-combustion engines | Klaus-Erwin Groeger | 2002-01-08 |
| 4911454 | Radial shaft sealing ring | Konrad Mader, Volker Schwarz | 1990-03-27 |
| 4568092 | Lip seal | Kunimatsu Hayashida, Dieter Fuchs | 1986-02-04 |