Patent attributes
A container system includes a first container including a bottom wall, at least one sidewall, and an open top, with a plurality of indented recesses formed in the bottom wall. A first lid closes the open top of the first container. A second container includes a bottom wall, at least one sidewall, and an open top. A second lid closes the open top of the second container, with a push indicator structure formed at a center portion of the second lid, and with a plurality of registration bumps formed about the push indicator structure. The first container is stackable on the second lid such that (i) each of the registration bumps in the second lid is aligned with an adjacent one of the recesses in the bottom wall of the first container and (ii) surfaces of the registration bumps are spaced from surfaces of the adjacent recesses.