Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876999 | Two-stroke engine | Roland Schierling | 1989-10-31 |
| 4846119 | Fuel injection pump for a two-stroke engine | Roland Schierling | 1989-07-11 |
| 4813391 | Arrangement for injecting fuel for a two-stroke engine | Roland Schierling, Hans Nickel | 1989-03-21 |
| 4807573 | Fuel injection arrangement for a two-stroke engine | Roland Schierling, Michael Wissmann, Hans Nickel | 1989-02-28 |