ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,922, issued on Dec. 9, was assigned to Wuyi Shanqiu Leisure Products Co. Ltd. (Jinhua, China).
"Double-deck trailer with a frameless top" was invented by Chenfei Qiao (Jinhua, China) and Jianqiu Hu (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double-deck trailer with a frameless top includes two front vertical rods and two rear vertical rods respectively; each of the front vertical rods and the rear vertical rods is sequentially fixed with a top fixing piece and a middle fixing piece from top to bottom; a rectangular area is formed between four top fixing pieces and the middle fixing pieces, and a cloth pocket is arranged in the ar...