ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,570, issued on Aug. 26, was assigned to JIANGSU BBL HOME TECHNOLOGY Co. LTD. (ChangZhou, China).
"Floorboard with coupling structure" was invented by Yanhui Li (Changzhou, China), Junxiang Dong (Changzhou, China) and Hongkai Xu (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A floorboard includes a board body, a first coupling structure with a tenon and a second coupling structure with a mortise. The tenon includes a first side portion and a second side portion. A second side portion includes a first connecting surface and a second connecting surface. The mortise includes a first recess and a second recess. The second recess include...