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 Centre Nat Rech MetallfiledCriticalCentre Nat Rech Metall
Priority to BE612613ApriorityCriticalpatent/BE612613R/en
Application grantedgrantedCritical
Publication of BE612613RpublicationCriticalpatent/BE612613R/en