ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,835, issued on April 29.
"Window ventilation and insert arrangement" was invented by John G. Labuda (Hoffman Estates, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A window ventilation arrangement includes a window assembly and a window insert arrangement. The window assembly includes a window frame and a slidable window. The frame includes an insert-receiving channel and is configured to provide an air-letting opening. The slidable window is displaceable within the window channel portion so as to provide the air-letting opening. The window insert arrangement includes a panel and a plurality of panel spacers. The panel has four corners, a first...