20120199294 | WINDOW ASSEMBLY - A window assembly including a first sash and a second sash, the first and second sashes each including a pane of glass disposed between a pair of horizontal rails and a pair of vertical stiles, a frame configured to retain the first and second sashes along a vertical plane of the frame, and a mechanism configured to simultaneously and correspondingly move a second sash in second direction upon movement of a first sash in a first direction opposite the second direction. | 08-09-2012 |