Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9571939 | Hearing aid positioning system and structure | Robert J. Fretz, Jean E. Daavettila, Vincent Joseph Mako | 2017-02-14 |
| 8605927 | Hearing aid positioning system and structure | Robert J. Fretz, Jean E. Daavettila, Vincent Joseph Mako | 2013-12-10 |