ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,801, issued on June 23, was assigned to DURQ MACHINERY CORP. (Taichung City, Taiwan).

"Visual identification positioning system of mowing robot" was invented by Yu-Chia Huang (Taichung City, Taiwan) and Fu-Peng Chou (Taichung City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A visual identification positioning system includes a first positioning member, a second positioning member, and a mowing robot. The mowing robot has a visual identification unit and a computation unit. The visual identification unit identifies a first identification feature of the first positioning member and a second identification feature of the second positioning m...