Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7557548 | Safety barrier device employing an overload protection circuit for limiting current or voltage or current and voltage | — | 2009-07-07 |
| 7139159 | Sensor device | Ernst Krause | 2006-11-21 |
| 7061738 | Protective circuit | Ernst Krause | 2006-06-13 |
| 6992467 | Safety barrier for limiting current and voltage | — | 2006-01-31 |