Patent attributes
A panel having a panel surface and an edge pair of mutually opposite complementary panel edges provided with complementary locking elements. The complementary locking elements are configured such that, when two panels are assembled, both a locking action of the panel edges in a direction perpendicular to the panel surface and a locking action preventing the panels from moving apart is achieved underneath a visible joint by the assembled complementary locking elements. The panel edges with the locking elements have an upper portion and a lower portion, relative to thickness of the panel. The locking elements are arranged and configured in the lower portion. The upper portion forms the upper joint region, including the visible part of the joint. The upper portion on each panel edge of the edge pair has a chamfer which, when two panels are assembled, forms a depressed joint. The chamfers of the complementary panel edges are different sizes in the upper portion. When two complementary panel edges are assembled, the larger chamfer is covered by the smaller chamfer. A butt-joint abutment surface is provided on a lower end of the larger chamfer.