Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6427015 | Power supply for microphone | Hans-Erik Backram, Borje Gustafsson | 2002-07-30 |
| 6191650 | Class d amplifier with pulse width modulation and a very low power consumption | Hans-Erik Backram, Borje Gustafsson | 2001-02-20 |