Security & Protection
| Sun 21 Jun 2026
Alexandria, June 22 -- U.S. Patent and Trademark Office has published Guizhou Power Grid patent application for Video Surveillance Device Capable of Multi-angle Monitoring. The invention was developed by Qin Yang, Ao Zhimin, Yao Maoshun, Wang Shuai, Wang Xianglan, Huang Lei, Li Jing, Zhao Hui, Li Zhongtao, Long Zheng, Yang Hui, ..