Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6462291 | Housing part with an actuating element | — | 2002-10-08 |
| 6216501 | Electronic Key | Jakob Marquardt, Karl Mueller | 2001-04-17 |
| 6016253 | Electronic module | Georg Seitz, Joachim Lach, Ernst-Ludwig Klein, Roland Wolfschlager | 2000-01-18 |
| 5298705 | Snap disk type switch | — | 1994-03-29 |
| D341134 | Keyboard | Kai-Uwe Marquardt, Ralf Sauer | 1993-11-09 |
| D340445 | Dual component keyboard unit | Kai-Uwe Marquardt, Ralf Sauer | 1993-10-19 |
| 4447687 | Pushbutton switch | Erich Marquardt | 1984-05-08 |