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 FR47843Aexternal-prioritypatent/FR1466742A/fr
Application filedfiledCritical
Publication of LU52298A1publicationCriticalpatent/LU52298A1/xx