ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,966, issued on June 24.

"Methods for improvements of the closed wing aircraft concept and corresponding aircraft configurations" was invented by Andras Hernadi (Stockholm).

According to the abstract* released by the U.S. Patent & Trademark Office: "Closed wing aircraft design and configuration with three wings on either side of the fuselage wherein at least one closed frame is established between the 1st wing and the 2nd wing, by using at least one bracing entity. A separate closed frame is established between the 2nd wing and the 3rd wing, by using at least one bracing entity. Each of said closed frames defines its own aerodynamic channel. The framework is strong and stiff, the ...