Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10475435 | Earphone having acoustic impedance branch for damped ear canal resonance and acoustic signal coupling | Ryan C. Struzik, Lei Cheng | 2019-11-12 |
| 10182287 | Earphone having damped ear canal resonance | Ryan C. Struzik | 2019-01-15 |