Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8199694 | Method for switching service option to circuit data | Zhihui Zhang, Bifeng Xie, Jian Cao, Wanchun Zhang | 2012-06-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8199694 | Method for switching service option to circuit data | Zhihui Zhang, Bifeng Xie, Jian Cao, Wanchun Zhang | 2012-06-12 |