ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,989, issued on March 25, was assigned to Guangzhou Metro Design & Research Institute Co. Ltd. (Guangzhou, China).
"Connection lock for prefabricated components" was invented by Xianli Ding (Guangdong, China), Zihui Zan (Guangdong, China), Xingzhong Nong (Guangdong, China), Juyang Wu (Guangdong, China), Haiou Shi (Guangdong, China), Bao Xiang (Guangdong, China), Ran Wang (Guangdong, China), Feiqi Ou (Guangdong, China), Qian Zhou (Guangdong, China), Hengyi Li (Guangdong, China), Chunjie Liu (Guangdong, China), Shengya He (Guangdong, China) and Liang Ye (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A connection lock for prefabricate...