ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,471,540, issued on Nov. 18.

"Detection device for metal stakes in a wire-trained plant-crop hedge" was invented by Laurent Delcasso (Pertuis, France), Sebastien Artinian (Pertuis, France) and Raphael Arnauts (Les Milles, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A detection device for metal stakes in a wire-trained plant-crop hedge having at least one detector configured to generate a detection signal when it passes next to a metal stake of the hedge wherein the metal stake detector has a first and a second metal detector arranged for generating respectively a first and a second measurement signal when they pass next to one of the metal stak...