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 Bretalex S P R LfiledCriticalBretalex S P R L
Priority to BE573952ApriorityCriticalpatent/BE573952A/fr
Publication of BE573952ApublicationCriticalpatent/BE573952A/fr