Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11303996 | Ceiling tile microphone | Derek Graham, David K. Lambert | 2022-04-12 |
| 11297420 | Ceiling tile microphone | Derek Graham, David K. Lambert | 2022-04-05 |
| 11240597 | Ceiling tile beamforming microphone array system | Derek Graham, David K. Lambert | 2022-02-01 |