Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7275527 | Method and apparatus for venting a crankcase of an internal combustion engine | Klaus Bruchner, Ralf Kaufmann, Rudolf Klein | 2007-10-02 |
| 5339778 | Cylinder-head-mounted camshaft bearing for an internal combustion engine | Christoph Reckzugel, Gerhard Doll, Jürgen Frey, Ralf Ohlendorf | 1994-08-23 |
| 5297506 | Valve operating system for an internal combustion engine | Christoph Reckzugel, Gerhard Doll, Ralf Ohlendorf | 1994-03-29 |
| 5007401 | Magnetic valve controlled injection device | Michael Grohn, Frank Thoma, Karlheinz Hoffmann | 1991-04-16 |