Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5812659 | Ear microphone with enhanced sensitivity | Daniel W. Mauney, Elwood G. Norris | 1998-09-22 |
| 5373555 | Unidirectional ear microphone and gasket | Elwood G. Norris | 1994-12-13 |
| D350747 | Hands-free telephone | — | 1994-09-20 |