Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8391280 | Method and system for realizing nonloss transmission of media stream after switching between open call and secret call | Xianfeng Guan, Haigang Guo | 2013-03-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8391280 | Method and system for realizing nonloss transmission of media stream after switching between open call and secret call | Xianfeng Guan, Haigang Guo | 2013-03-05 |