Improvements in prefabricated construction elements for construction of buildings. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in prefabricated building elements for the construction of buildings, consisting of two panels arranged back to back, a vacuum being provided therebetween, characterized in that they present at least a part of their periphery on thicknesses that constitute parts of formwork for bones. (Machine-translation by Google Translate, not legally binding)