US Patent Issued to China Railway Engineering Services on June 16 for "Method and system for three dimensional positioning in subway construction site, and medium" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,659,908, issued on June 16, was assigned to China Railway Engineering Services Co. Ltd. (Chengdu, China).

"Method and system for three dimensional positioning in subway construction site, and medium" was invented by Ke Chen (Chengdu, China), Suimei Liu (Chengdu, China), Yuanliang Tan (Chengdu, China), Youxing Wu (Chengdu, China), Mengliu Yang (Chengdu, China), Xiang Liu (Chengdu, China), Longguan Zhang (Chengdu, China), Kaifu Li (Chengdu, China), Zhaohua Liu (Chengdu, China) and Qibin Wang (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for 3D positioning in a subway construction site. The method includes: establishing a 3D coord...