Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9779714 | Active noise control arrangement, active noise control headphone and calibration method | Helmut Theiler | 2017-10-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9779714 | Active noise control arrangement, active noise control headphone and calibration method | Helmut Theiler | 2017-10-03 |