Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9967307 | Implementing a high quality VoIP device | Zhishan Zhuang, Huagui Zhou | 2018-05-08 |
| 8873543 | Implementing a high quality VOIP device | Zhishan Zhuang, Huagui Zhou | 2014-10-28 |