Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7042310 | High-pass branch of a frequency separating filter for ADSL systems | Joerg Petzold, Johannes Beichler | 2006-05-09 |
| 6617941 | Method for designing a filter system | — | 2003-09-09 |
| 6559808 | Low-pass filter for a diplexer | Jörg Petzold, Johannes Beichler | 2003-05-06 |