Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6622704 | Device for exhaust gas recirculation into the air intake region of motor vehicle internal combustion engines | Karlheinz Wienand, Karlheinz Ullrich, Gerhard Damaschke | 2003-09-23 |
| 6502556 | Process for exhaust gas recirculation into the air intake region of motor vehicle internal combustion engines and device therefor | Karlheinz Wienand, Karlheinz Ullrich, Gerhard Damaschke | 2003-01-07 |