ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,751,549, issued on Oct. 6.
"Seat board of foldable chair and bottom frame thereof" was invented by Luhao Leng (Xiamen City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seat board of a foldable chair includes a panel and a bottom frame. A top portion of the bottom frame is bent to form an annular inner blocking edge and an annular outer pressing edge, and an annular installation groove is formed between the annular inner blocking edge and the annular outer pressing edge. The panel form an annular folded-downward edge, and the annular folded-downward edge is inserted into the annular installation groove. The annular inner blocking edge cooperate...