ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,463, issued on Jan. 13, was assigned to Revoltab AG (Zug, Switzerland).
"Air enhancing device" was invented by Livio Fazio (Unterageri Zug, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air enhancing device (1) for disseminating molecules and/or other substances into the air is disclosed comprising a base frame (5) configured to be fixedly mounted in a wall, panel, or furniture of a human accessible space, in particular in an in-wall box or an in-wall cavity in a wall of a building; a cartridge holder (7) attached to the base frame (5) and configured to receive a removable cartridge, the cartridge being designed to contain a fluid su...