ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,175, issued on Sept. 23.
"Movable puzzle platform" was invented by Xiaoling Che (Hubei, China) and Jinyan Duan (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A movable puzzle platform includes: a board assembly, the board assembly includes: a puzzle board, a supplement arrangement, and a restraining wall. The puzzle board includes a puzzle plate and a first fixing portion extending from the puzzle plate. The supplement arrangement includes: a first main supporting wall supported on a bottom surface of the puzzle plate. The restraining wall has a first extending wall. A first receiving gap is formed between the first extending wall...