ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,802, issued on Oct. 21, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Waterfall grille of HVAC system" was invented by Mariana Hernandez (Mexico City), Estephany Andrea Osorio (Tlaxcala, Mexico) and Isidro Antonio Gonzalez (Toluca, Mexico).

According to the abstract* released by the U.S. Patent & Trademark Office: "An airflow grille of a heating, ventilation and air conditioning (HVAC) system includes a grille housing and a grille plate assembled to the grille housing. The grille housing and the grille plate define a grille plenum therebetween. An airflow inlet in defined in the grille housing and a plurality of airflow outlets are defined in the grille plate. A...