Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957068 | Liquid-cooled four-valve cylinder head for a multi-cylinder internal combustion engine | Willi Springer, Ludwig Meissner, Helmut Bonfert, Michael Bottcher, Thomas Hardt +7 more | 1990-09-18 |
| 4942858 | Cylinder head for air-compressing, self-ignition internal combustion engines | Rolf Klumpp, Wolfgang Strobel, Gunter Brenker | 1990-07-24 |
| 4919371 | Sealing passage arrangement for a pipeline | Helmut Bonfert, Thomas Hardt, Rolf Klumpp | 1990-04-24 |
| 4823747 | Cylinder head camshaft mounting arrangement | Rolf Klumpp, Thomas Hardt | 1989-04-25 |