ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,601, issued on Dec. 23.
"Puzzle board" was invented by Xiaopin Li (Ningbo, China), Bassoul Morris Albert (New York) and Zepeng Zhu (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A puzzle board includes a top board, a frame, a bottom board, and a base. The top board includes an upper board, a first bounding box, and limit blocks. The frame includes a border formed by splicing second bounding boxes set on four sides, and the border contains storage spaces for store items. The second bounding boxes set on an upper side and a lower side each is provided with a fluted slide assembled with the upper board, and the limit blocks are placed be...