ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,543, issued on Feb. 4, was assigned to PGT INNOVATIONS LLC (Harrisburg, Pa.).
"Window frame assembly" was invented by Michael Dietmar Nau (North Port, Fla.), Kenneth John Vander Bent Jr. (Bradenton, Fla.) and Joseph Mark Johnson (Port Charlotte, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lift rail and sill assembly for a window frame assembly includes a lift rail defining a lower rail end and an upper rail end, the lift rail further defining a seal retaining channel, the lift rail movable between an open position and a closed position; a seal received in the seal retaining channel of the lift rail; and a sill defining a lower sill end and ...