Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612691 | Ergonomic keyboard | Manfred Frank | 1997-03-18 |
| 5574446 | Keyboard | Jorg Dittrich, Gunter Greiner, Karl-Heinz Muller, Klaus Schuster, Kurt Michel | 1996-11-12 |
| 5252952 | Cursor device with zero-point resetting | Manfred Frank | 1993-10-12 |
| 4800245 | Key module for key-actuated membrane switch panels | Walter Mertel | 1989-01-24 |
| 4467160 | Low profile switch | Gunter Bauer | 1984-08-21 |
| 4339643 | Push-button key switch | — | 1982-07-13 |