ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,521, issued on Aug. 18, was assigned to CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT Co. LTD (Changzhou, China).

"Laser surveying system for setting out" was invented by Ou Zhang (Changzhou, China), Junichi Kodaira (Changzhou, China) and Zhu Weiping (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to the field of architecture and civil engineering, in particular to a construction surveying system. A laser surveying system for setting out comprises a horizontal laser emitter for emitting horizontal laser beams in a sector; a vertical laser emitter for emitting vertical laser beams in a sector; a levelin...