US Patent 7451875 Nesting system for storing containers

A container storage system includes a plurality of containers, wherein each container is of a different size. Each container includes a base and wall extending up from and perpendicular to the base forming a pool therein. A first lip extends around a periphery of the wall outside the pool on a side opposite the base. A second lip extends around a periphery of the wall outside the pool on a side adjacent the base. The container further includes a lid having a shape and size that corresponds with a shape and size of the base. The lid has a retaining channel that extends around a periphery thereof for releasably receiving one of the first and second lips for releasably securing the lid to at least one of an open end of said container and the base of said container.