Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5047994 | Supersonic bone conduction hearing aid and method | Martin L. Lenhardt, William Regelson | 1991-09-10 |
| 4982434 | Supersonic bone conduction hearing aid and method | Martin L. Lenhardt, William Regelson | 1991-01-01 |