ALEXANDRIA, Va., April 21 -- United States Patent no. 12,604,987, issued on April 21, was assigned to DEWERTOKIN TECHNOLOGY GROUP Co. LTD. (Jiaxing, China).
"Sofa extension apparatus" was invented by Long Li (Jiaxing, China), Pengfei He (Jiaxing, China), Liming Yang (Jiaxing, China), Bin Shen (Jiaxing, China), Weiyao Zhou (Jiaxing, China), Kangming Tao (Jiaxing, China), Guowei Wang (Jiaxing, China), Qiqi Ye (Jiaxing, China), Guangjiao Zhang (Jiaxing, China) and Shuangbo Liu (Jiaxing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a sofa extension apparatus. The sofa extension apparatus includes a sofa frame, extension brackets, a first linkage rod, a second linkage rod and a linear drive as...