Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7164776 | Vibration balanced receiver | Thomas E. Miller, Elmer V. Carlson, David E. Schafer | 2007-01-16 |
| D360948 | Hearing aid receiver | — | 1995-08-01 |
| D360949 | Hearing aid receiver | — | 1995-08-01 |
| D360691 | Hearing aid receiver | — | 1995-07-25 |
| 5193116 | Hearing and output transducer with self contained amplifier | — | 1993-03-09 |