Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835516 | Arrangement for introducing audio-frequency signals into a power supply line | Karlheinz Kutschera, Rudolf Seibert, Walther Scharm | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835516 | Arrangement for introducing audio-frequency signals into a power supply line | Karlheinz Kutschera, Rudolf Seibert, Walther Scharm | 1989-05-30 |