Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6640794 | Intake system for an internal combustion engine with a membrane preferentially permeable to oxygen molecules | — | 2003-11-04 |
| 6557512 | Adjustable intake pipe | Rudolf Leipelt | 2003-05-06 |