Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1088215 | Noise reduction earplug | Dehua Guo | 2025-08-12 |
| D1058660 | Lanyard | Dehua Guo | 2025-01-21 |
| D968372 | Earphone | Dehua Guo | 2022-11-01 |
| D932002 | Triple layer industrial earplug | — | 2021-09-28 |
| D931437 | Double layer soundproof earplug | — | 2021-09-21 |
| D924841 | Three-layer tilted head earplugs | — | 2021-07-13 |