Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9549239 | Earphone wire control device, earphone, voice recording system and voice recording method | Chenglin Liu | 2017-01-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9549239 | Earphone wire control device, earphone, voice recording system and voice recording method | Chenglin Liu | 2017-01-17 |