ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,896, issued on Sept. 23, was assigned to General Electric Co. (Evendale, Ohio).

"Gas turbine engine having a heat exchanger located in an annular duct" was invented by Scott Alan Schimmels (Miamisburg, Ohio), Jeffrey Douglas Rambo (Mason, Ohio), Timothy Richard DePuy (Liberty Township, Ohio), Steven B. Morris (Mason, Ohio), Eric Barre (Cincinnati), Brandon Wayne Miller (Middletown, Ohio), Leonardo Aguilar Willys (Queretaro, Mexico) and Victor Moreno Patan (Queretaro, Mexico).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger positioned within an annular duct of a gas turbine engine is provided. The heat exchanger extends substantially c...