Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6717305 | Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means | Heinz Renner, Juha Backman | 2004-04-06 |
| 6370257 | Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts | Peter Bleim, Ewald Frasl, Erich Klein | 2002-04-09 |
| 6072886 | Electroacoustic transducer comprising spring contacts formed with at least one bend | Ewald Frasl, Erich Klein | 2000-06-06 |
| 6038327 | Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer | Peter Bleim, Ewald Frasl, Erich Klein | 2000-03-14 |
| 4521741 | Impedance transformer circuit | — | 1985-06-04 |