Mural block with outer face. Perfected view. (Machine-translation by Google Translate, not legally binding)

摘要

Wall block exterior face view perfected essentially characterized by being of the type provided with through holes between their bases and vertical grooves in their coupling fronts, has on its outer side view three transverse recesses, in half cane, of which two are equidistant from the ends while the third is located a third between them. (Machine-translation by Google Translate, not legally binding)