US Patent 7621223 Corner shelf system

A shelf system for corner walls where the shelf members are supported against two perpendicularly disposed walls without showing any mounting elements. The shelf member includes at least two contiguous sides defining edges of a predetermined thickness and perpendicular to each other. Tongue members extend for the sides and are receivable within cooperative wall cavities for a snug mechanical engagement. Adhesive is applied to the sides to immobilize the shelf member and thus enhance the structured integrity of the system.