Self-cleaning glass perfected (Machine-translation by Google Translate, not legally binding)

摘要

Improved self-cleaning vessel, essentially characterized in that at the edge of its base presents a plurality of incoming deformations, regularly arranged, which internally give rise to protrusions forming coplanar base rungs and larger dimensions, by difference of thicknesses, to the dimensions of the deformation corresponding to the exterior of the base of the vessel, said steps constituting a seat for another vessel housed therein. (Machine-translation by Google Translate, not legally binding)