ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,349, issued on May 20, was assigned to GUANGZHOU OO MEDICAL SCIENTIFIC Ltd. (Guangdong, China).
"Orthodontic appliance" was invented by Tingjin Zhong (Guangdong, China), Zien Xu (Guangdong, China), Li Ji (Guangdong, China) and Wei Yu (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An orthodontic appliance, includes a main body having an archwire groove and a movable part, and further includes a fixing structure for fixing the movable part at least in the closed position. The fixing structure includes an elastic member and a movable element which are located in one of the main body or the movable part. The movable element includes at...