ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,419,408, issued on Sept. 23, was assigned to Jian Xu (Guangdong, China).
"Multi-face toothbrush" was invented by Jian Xu (Guangdong, China) and Hongwen Li (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toothbrush holder is disclosed, the toothbrush holder may include: a handle, where the handle has a top provided with a fixing head, and the fixing head is provided with a plurality of second sliding rails; and a toothbrush bar, where the toothbrush bar is provided with a first sliding rail, and the toothbrush bar has a front end provided with a rotating head, the rotating head is provided with a third sliding rail, the first sliding ...