ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,680, issued on Sept. 1.
"Folding trailer" was invented by Qingyuan Wu (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to the trailer and particularly serves for a folding trailer, comprising a rod assembly, four vertical pipes, a linkage sliding sleeve, a left-right folding assembly and a front-back folding assembly, the left and right folding assemblies include six cross tubes, and the front-rear folding assemblies include two cross straight tubes and two cross bend tubes, to ensure that the intersections of the second and third cross tubes, as well as the fourth and fifth cross tubes, are shifted down, as is the...