ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,522, issued on June 10.
"Bed ladder configured to be installed on bed frame for use" was invented by Luhao Leng (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bed ladder configured to be installed on a bed frame comprises an upper frame transverse bar and a lower frame transverse bar, and the upper frame transverse bar and the lower frame transverse bar are parallel to each other and located on a vertical plane. The bed ladder comprises two handrails symmetrically arranged in a left-and-right direction and a plurality of step bars connected to the two handrails, and the bed ladder is vertically arranged. The upper frame transverse b...