Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902862 | Keyboard switch device for facilitating removal and replacement of push buttons | Jurgen Oelsch, Nicola Digiovinazzo, Gerhard Hochgesang | 1990-02-20 |
| 4580022 | Keyboard key with means for supporting large key surface | Jurgen Oelsch | 1986-04-01 |