Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7286952 | Method for testing subscriber access lines | Svend Christensen, Ulrich Liefländer, Hans-Werner Rudolf, Franz Schmoller | 2007-10-23 |
| 6137667 | Circuit and method for triggering an over-voltage protection unit | Bernhard Sieben, Roland Krimmer | 2000-10-24 |