Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11368791 | Speaker vibration diaphragm and method for manufacturing the same, and moving-coil speaker | Xiaodong Guo | 2022-06-21 |
| 11259933 | Expandable motion preservation spacer | — | 2022-03-01 |