Security & Protection
| Tue 22 Jul 2025
Beijing, July 23 -- Han Shuang has secured a patent on dtmb emergency broadcasting device.
The patent application number is CN202421328519U 20240612. The patent publication number is CN222582427 (U). International Patent Classification codes are F16M11/08, F16M11/10, F16M11/24, H04H20/46, H04H20/59, H04R1/32, H05K5/02 and H05..