ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,902, issued on Sept. 8.
"More stable gathering trailer" was invented by Qingyuan Wu (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The application is for trailers, and specifically is a more stable gathering trailer, comprising a rod assembly, which includes four rods, an upper fixing part, a lower fixing part, and a middle movable part, and also includes a left-right contraction control assembly, a left-right contraction control assembly comprising a first right-left adjusting lever, second right-left adjusting lever, third right-left adjusting lever, fourth left-right adjusting lever, fifth right-left adjusting lever, sixth right-le...