ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,140, issued on Nov. 4.
"Rotatable lifting storage device" was invented by Hongyuan Yang (Dongtai, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotatable lifting storage device is provided, which includes a column, a bottom end of the column is provided with a base, a bottom of the base is provided with a clamp seat, one surface of the column is provided with an adjustable seat that can slide up and down. One side thread of the adjustable seat is provided with a third positioning screw, one surface of the adjustable seat is provided with a rotating seat, one surface thread of the rotating seat is provided with a fourth positioning screw. One...