Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798890 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Viorel Drambarean, Andrew J. Haapapuro | 2004-09-28 |
| 6704423 | Hearing aid assembly having external directional microphone | C. Roger Anderson, Robert B. Schulein | 2004-03-09 |