ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,575, issued on April 14, was assigned to BAE Systems PLC (London).

"Range extension device" was invented by Andrew David Williams (Monmouth, Great Britain), Benjamin Daniel Worrall (Monmouth, Great Britain) and Thomas William Tyrell (Monmouth, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a range extension device, particularly to a reversible range extension device, especially reversible base bleed device.There is provided a reversible range extension device, capable in use, of being reversibly engaged to a body of an artillery shell, said range extension device comprising at least one energetic mater...