ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,809, issued on Feb. 3, was assigned to CHINA THREE GORGES Corp. (China).
"Gap measuring device" was invented by Chao Gao (Wuhan, China), Zhiwei Wang (Wuhan, China), Yuxin Li (Wuhan, China), Qi Yu (Wuhan, China) and Jie Yu (Wuhan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gap measuring device is provided, which includes a base; a driving assembly including a first driving structure including a first moving part being capable of moving on the base in a first direction and a second driving structure being connected to the first moving part and including a second moving part being capable of moving in a second direction which is perpendicula...