ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,922, issued on Feb. 24, was assigned to WONDERLAND SWITZERLAND AG (Steinhausen, Switzerland).

"Child bed" was invented by Junjie Hu (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A child bed includes a frame. The frame includes a plurality of vertical support members, arranged at corners of the frame. The frame also includes two top side rods, extending longitudinally and arranged transversely opposite to each other on the vertical support members. Each of the top side rods is able to vertically slide between a high position and a low position with respect to the vertical support members. The frame further includes two side pull-ro...