ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,277, issued on June 2, was assigned to Stobag AG (Muri, Switzerland).
"Roof construction" was invented by Jost Imfeld (Scherz, Switzerland), Raphael Flaig (Muri, Switzerland) and Victor Stenz (Oberruetti, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A roof structure has a level support frame extending in a support frame plane, is supported by a support structure and has at least two longitudinal beams arranged parallel and at a mutual distance from each other and at least two cross beams arranged parallel to each other and at a mutual distance from each other and surrounds a frame field. Several rafters connect the cross beams with each...