Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4649246 | Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys | Horst Widmaier, Friedrich Wolf | 1987-03-10 |
| 4531033 | Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys | Horst Widmaier, Friedrich Wolf | 1985-07-23 |