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
Priority claimed from FR759541Aexternal-prioritypatent/FR73928E/fr
Application filed by Laden S AfiledCriticalLaden S A
Publication of BE575435ApublicationCriticalpatent/BE575435A/fr