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 Betonac Algemene Bouw En BetonfiledCriticalBetonac Algemene Bouw En Beton
Priority to BE583908ApriorityCriticalpatent/BE583908A/fr
Publication of BE583908ApublicationCriticalpatent/BE583908A/fr