ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,186, issued on Nov. 25, was assigned to DEWERTOKIN TECHNOLOGY GROUP Co. LTD. (Jiaxing, China).
"Chair frame and chair" was invented by Long Li (Jiaxing, China), Liming Yang (Jiaxing, China), Guowei Wang (Jiaxing, China), Bin Shen (Jiaxing, China), Kangming Tao (Jiaxing, China), Qiqi Ye (Jiaxing, China) and Guangjiao Zhang (Jiaxing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a chair frame and a chair. The chair frame supports a human waist and back by using a waist support assembly and supports human legs and feet by using a footstool assembly. Meanwhile, when the waist support assembly is unfolded, driven by a second support r...