Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11595751 | Loudspeaker with array of electrostatic card stack drivers | David A. Badger, William Martin Lackowski, James A. Andrews | 2023-02-28 |
| 11575991 | Stereophonic loudspeaker system and method of use thereof | David A. Badger | 2023-02-07 |