Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7764801 | Directional microphone array system | Willem Soede, Robert B. Schulein, Norman P. Matzen | 2010-07-27 |
| 7460677 | Directional microphone array system | Willem Soede, Robert B. Schulein, Norman P. Matzen | 2008-12-02 |