ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,503, issued on Feb. 17, was assigned to Jing-Jin Electric Technologies Co. Ltd. (Beijing).

"Differential system" was invented by Yang Cao (Beijing), Ping Yu (Beijing), Lena Jin (Beijing), Jianwen Li (Beijing), Xuejian Liu (Beijing) and Qing Yin (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The differential system comprises a differential, a split clutch and a differential lock clutch. The differential comprises an outer shell and an inner shell, the inner shell is provided inside the outer shell, and the outer shell is configured to be transmission connected with an upper stage transmission structure of the differential. The split clutch i...