Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5577420 | Cam shaft for internal combustion engine | Helmut Riemscheid, Karl Weiss, Herbert Frielingsdorf, Peter Amborn, Klaus Greulich +2 more | 1996-11-26 |
| 5165303 | Cam shaft for internal combustion engine | Helmut Riemscheid, Karl Weiss, Herbert Frielingsdorf, Peter Amborn, Klaus Greulich +2 more | 1992-11-24 |