Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5131128 | Protection element for all-in-the-ear hearing aid and tool for use in the replacement hereof | Peter N. Bisgaard | 1992-07-21 |
| 4984277 | Protection element for all-in-the-ear hearing aid | Peter N. Bisgaard | 1991-01-08 |