Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890003 | Capacitively buffered power supply for an electronic device | Claus Cramer | 1989-12-26 |
| 4835516 | Arrangement for introducing audio-frequency signals into a power supply line | Karlheinz Kutschera, Walther Scharm, Manfred Schwendtner | 1989-05-30 |