ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,679, issued on Sept. 1, was assigned to Hunan Weiyang Technology Co. Ltd (Changsha, China).
"Trailer frame and combined trailer" was invented by Xiaoli Dai (Changsha, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trailer frame and a combined trailer are provided. The trailer frame includes a bottom frame, a snap-fit rod, and a pair of brackets. The pair of brackets are correspondingly provided on both sides of the bottom frame. Two free ends of each of the brackets are correspondingly hinged to the bottom frame, so that the brackets can flip toward an inner side of a top surface of the bottom frame. A hinged end of the snap-fit rod is hinge...