Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854415 | Hearing aid whose components are mounted in a hearing aid housing | — | 1989-08-08 |
| 4791819 | Method and apparatus for making comparative acoustic measurements | Peter Nassler | 1988-12-20 |