Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11471331 | Earplug for selective attenuation of sound and an insert with an acoustic filter for use in an earplug | Christian Dittrich, Jason McIntosh | 2022-10-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11471331 | Earplug for selective attenuation of sound and an insert with an acoustic filter for use in an earplug | Christian Dittrich, Jason McIntosh | 2022-10-18 |