ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,089, issued on July 8, was assigned to GUANGDONG MINGMEN LOCKS INDUSTRY Co. LTD. (Zhongshan, China).
"Door hinge" was invented by Guangrui Ran (Guangdong, China), Qian Xiao (Guangdong, China), Zengrong Xie (Guangdong, China) and Hailong Tang (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a door hinge, comprising: a fixed body that is provided with a first connecting shaft and a second connecting shaft along the lengthwise direction therein; a linkage assembly of which both ends are respectively hinged to the fixed body and a movable body; the movable body that is provided with a sliding block capable of sliding along th...