ALEXANDRIA, Va., June 19 -- United States Patent no. 12,329,292, issued on June 17, was assigned to XIAMEN HONOR INDUSTRY AND TRADING Co. LTD (Xiamen, China).
"Side structure, playpen frame and playpen" was invented by Jian Yong Zhang (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A side structure includes: a middle vertical rod arranged vertically after being unfolded; a first lower horizontal rod arranged horizontally after being unfolded; a second lower horizontal rod arranged horizontally after being unfolded; a sliding support base, wherein a first sliding groove slidably connected to the middle vertical rod is provided in the middle part of the sliding support base, the sliding support b...