ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,905, issued on May 20.
"Refrigerated portable room system" was invented by David Ronsen (Bozeman, Mont.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerated portable room system including a refrigerated room, air conditioning unit, insulated supply and exhaust hoses, and bumpers that are situated around the perimeter of the floor of the refrigerated room. The air conditioning unit supplies cooled air to the refrigerated room, which is sealed as to the exterior environment. The walls, floor and roof of the refrigerated room are comprised of two layers of a vinyl-coated polyester material with a continuous filament insulation batting containe...