Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998781 | Brake device for a hydraulic vehicle brake system | Georg Kehl, Heinz Siegel, Helmut Deringer, Dietmar Rischen, Alfred Bullinger | 1991-03-12 |
| 4934248 | Brake booster | Hannes Bertling, Georg Kehl, Heinz Siegel | 1990-06-19 |
| 4882976 | Brake booster | Hannes Bertling, George Kehl, Robert Mergenthaler, Dietmar Rischen, Ernst-Dieter Schafer +2 more | 1989-11-28 |