Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11197109 | Hearing device with active vent comprising solenoid | Christian Landolt, Christian Frei, Erwin Kuipers | 2021-12-07 |
| 11128964 | Filter for a microphone system, a microphone system, a miniature electronic device and a method of equipping a printed circuit board | Paul Portmann, Axel Schlesinger | 2021-09-21 |