Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6118837 | Method for detecting the dropping of a control element | Konrad Krien | 2000-09-12 |
| 5956381 | Method and apparatus for detecting the dropping of a control element | Konrad Krien | 1999-09-21 |