Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hedemann E E Von, Hedemann R VonfiledCriticalHedemann E E Von
Publication of CH20835ApublicationCriticalpatent/CH20835A/en
An industrial result consisting of tubular blocks of cement, lime, sand, gypsum, clay or any other paste for the fast and economical construction of buildings.