Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626499 | Device for breaking up the outer layers of the ground | Karl-Otto Heber | 2003-09-30 |
| 6550312 | Method for determining the air/fuel ratio in an internal combustion engine combustion chamber | Peter Hohner, Hartung Wilstermann | 2003-04-22 |