Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5979381 | Valve gear mechanism for an internal combustion engine | Reiner Walter, Armin Bertsch | 1999-11-09 |
| 5975037 | Internal combustion engine | Armin Bertsch, Reiner Walter | 1999-11-02 |
| 5884592 | Valve gear mechanism for an internal combustion engine | Reiner Walter, Armin Bertsch | 1999-03-23 |
| 5069176 | Internal combustion engine | Max Ruf | 1991-12-03 |
| 4838217 | Cast iron camshaft for internal combustion engines | Max Ruf | 1989-06-13 |
| 4745892 | Internal combustion engine | Max Ruf | 1988-05-24 |
| 4716735 | Exhaust gas turbo-supercharger for a vehicle engine | Max Ruf | 1988-01-05 |
| 4699092 | Fluid-cooled cylinder head | Max Ruf | 1987-10-13 |
| 4643138 | Suction pipe system for multicylinder internal combustion engine | Max Ruf, Johannes Steinwart | 1987-02-17 |