US Patent Issued on June 23 for "Door and retractable ladder assembly" (Mexican Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,821, issued on June 23.

"Door and retractable ladder assembly" was invented by Silvia Janeth Guzman Benavides (Monterrey, Mexico), Cecilia Judith Puentes Sanchez (Monterrey, Mexico) and Carlos Andres Rodriguez Garza (Monterrey, Mexico).

According to the abstract* released by the U.S. Patent & Trademark Office: "A door and retractable ladder assembly for providing access to and from an upper story of a building includes a frame that is configured to be mounted within an opening defined by a ceiling structure, a retractable ladder assembly, and a door. To facilitate improved sealing of the opening, the frame preferably includes a recess that is coextensive with and is configured to...