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 FR7230303Aexternal-prioritypatent/FR2196981A1/fr
Priority claimed from FR7326664Aexternal-prioritypatent/FR2329624A2/fr
Application filedfiledCritical
Publication of HU167980BpublicationCriticalpatent/HU167980B/hu