ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,736,957, issued on Sept. 15.

"Intelligent operation and maintenance control platform for secondary power system" was invented by Yuanhang Yang (Kunming City, China), Dezhi Kong (Kunming City, China), Shuying Pang (Kunming City, China), Qiaowei Yang (Kunming City, China), Hengchu Shi (Kunming City, China), Hao You (Kunming City, China), Benyu Li (Kunming City, China), Minghui Zhao (Kunming City, China), Min Zhang (Kunming City, China), Jing Chen (Kunming City, China), Jiong Chen (Kunming City, China), Xiao Zhang (Kunming City, China), Zebing Shi (Kunming City, China), Tao He (Kunming City, China), Yigong Xie (Kunming City, China), Ming Zhao (Kunming City, China), Yumin Chen (Kunming C...