ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,915, issued on Feb. 24, was assigned to FOSHAN TIANSHENG LEISURE SPORTS GOODS Co. LTD (Foshan, China).
"Air mattress" was invented by Guoming Zhang (Foshan, China), Weiming Wu (Foshan, China), Zhigan Liang (Foshan, China), Jiaqian Luo (Foshan, China) and Shujun Liang (Foshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air mattress is provided. The air mattress includes a top sheet, a bottom sheet, and an enclosing sheet, where an air chamber is provided therein with multiple upper diagonal pulling sheets and multiple lower diagonal pulling sheets; ends of each of the upper diagonal pulling sheets are provided with upper curved portions;...