Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6876749 | Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics | Robert B. Schulein, Elmer V. Carlson, Viorel Drambarean | 2005-04-05 |