Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931369 | Contact arrangement for the battery of an in-ear hearing aid | Heinz Hardt | 1990-06-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931369 | Contact arrangement for the battery of an in-ear hearing aid | Heinz Hardt | 1990-06-05 |