Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814357 | At least substantially metallic cylinder head gasket | Armin Diez, Wolfgang Fritz, Karl Schmauder | 2004-11-09 |
| 6769696 | At least substantially metallic cylinder head gasket | Armin Diez, Wolfgang Fritz | 2004-08-03 |