ALEXANDRIA, Va., July 28 -- United States Patent no. 12,690,661, issued on July 28.
"Backpack" was invented by Zhifeng Liao (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A backpack is provided. The backpack includes: a longitudinal supporting element, a first end of which is opposite to the shoulder and the second end opposite to a waist of the user; a main body includes a top end, a middle part and a bottom end; the main body is inclined relative to the longitudinal supporting element; and a transverse connector connects the longitudinal supporting element to the main body, and maintains the inclination of the main body relative to the longitudinal supporting element. A portion weight of ...