Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11706560 | Adjustable sidetone and active noise cancellation in headphones and similar devices | John Hammer Madsen | 2023-07-18 |
| 11627402 | Headphone with magnetic attachment means for a corresponding ear cushion | Bernardus L Verbraak | 2023-04-11 |