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 Levacq S A EtsfiledCriticalLevacq S A Ets
Priority to BE612581ApriorityCriticalpatent/BE612581A/fr
Publication of BE612581ApublicationCriticalpatent/BE612581A/fr