Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9042249 | Method and apparatus for processing voice call | Zhijun Zhou, Zhongliang Zhu | 2015-05-26 |
| 8494499 | System and method for achieving call back service | Zhijun Zhou | 2013-07-23 |