Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7720243 | Acoustic enhancement for behind the ear communication devices | Mark A. Brumback, John Stuart Freeman | 2010-05-18 |
| 7162323 | Decentralized method for manufacturing hearing aid devices | Mark A. Brumback | 2007-01-09 |