Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6763758 | Multi-part cooled piston for an internal combustion engine | Dieter Messmer | 2004-07-20 |
| 6722263 | Bottom covering of a cooling chamber for pistons of internal combustion engines | Klaus Keller, Roland Lochmann | 2004-04-20 |
| 6698391 | Multipart cooled piston for a combustion engine | — | 2004-03-02 |
| 6698392 | Single-part cooling channel piston for a combustion engine | Hans-Jurgen Kohnert | 2004-03-02 |