Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11438709 | Acoustic filter with enhanced valve stroke | Adrian Lara-Quintanilla, Engbert Wilmink | 2022-09-06 |
| 11291586 | Earplug and method for attenuating sound | Joost LODDER | 2022-04-05 |
| 11266532 | Acoustic filter with attenuation control | Adrian Lara-Quintanilla, Engbert Wilmink | 2022-03-08 |