ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,041, issued on June 10, was assigned to New-Tec Integration (Xiamen) Co. Ltd. (Xiamen, China).

"Ladder structure for frame bed" was invented by Luhao Leng (Fujian, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ladder structure for a frame bed comprises a ladder and a connecting member. The ladder comprises two side bars symmetrically located on a left side and a right side of the ladder and a plurality of transverse step bars connected to the two side bars and spaced apart from one another along a length direction of the side bars. An upper end of each of the two side bars of the ladder is connected to a side of an upper bunk frame. The lad...