ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,396,558, issued on Aug. 26, was assigned to Emomo Technology (Zhejiang) Co. Ltd. (Huzhou, China).

"Narrow backrest electric seat mechanical extension device" was invented by Yushu Zhao (Huzhou, China), Wencai Li (Huzhou, China) and Kai Jin (Huzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A narrow backrest electric seat mechanical extension device is provided, which comprises mechanical extension units, a rear driving piece and a front drive piece, wherein each mechanical extension unit comprises a leg assembly, a back assembly and a seat panel, the back assembly is provided with an eleventh connector, a front support piece, a tenth connecto...