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 Anciens Etablissements MetallufiledCriticalAnciens Etablissements Metallu
Priority to BE592300ApriorityCriticalpatent/BE592300A/nl
Publication of BE592300ApublicationCriticalpatent/BE592300A/nl