Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D895901 | Hearing protector | Robert C. Coffin, Matthew V. Stonebraker, Jr., Ravi Thomas | 2020-09-08 |
| D889754 | Hearing protector | Robert C. Coffin, Matthew V. Stonebraker, Jr., Ravi Thomas | 2020-07-07 |
| 10617333 | Acoustically probed over-the-ear hearing assessment devices and methods | James D. Brown, Michael G. Wurm | 2020-04-14 |