ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,787, issued on Sept. 23, was assigned to VERANDA PLUS e.K. (Nettetal-Kaldenkirchen, Germany).
"Closure with valve device" was invented by Bekim Mazreku (Kaldenkirchen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A closing body allows closing and opening an access opening or a passage of a room in case of a pressure difference between an interior and exterior of the room. A closing fitting set and a door leaf are disclosed, by means of which closing fitting set and door leaf a closing body can be formed. The closing body is in the form of a pivotable door, a pivotable window or a pivotable flap. A valve device is provided on the closing b...