ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,811, issued on Aug. 5, was assigned to Unique Home Designs Inc. (Gilbert, Ariz.).

"Jamb-hung secondary door and method of installation" was invented by Lawrence Robert Chavez (Gilbert, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of installing a combination door unit into a threshold of a house, comprising placing a combination door unit within a threshold opening of a house surrounded by a plurality of house frame studs. The combination door unit comprises a door frame, a threshold door hingedly coupled to the door frame, and a secondary door. The secondary door is hingedly coupled to a mounting frame and the mounting frame, the doo...