Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881262 | Electronic hybrid circuit | Jurgen Zanzig | 1989-11-14 |
| 4829562 | Receiver for detecting different fixed frequency signals on a telephone trunkline | Katalin Grafl | 1989-05-09 |
| 4789999 | Line circuit for coupling a subscriber set to a switching facility to provide a complex impedance match | Jurgen Zanzig | 1988-12-06 |