Legal status (The legal status 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 status listed.)
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 filedfiledCritical
Priority to FR69046930ApriorityCriticalpatent/FR1474957A/fr
Application grantedgrantedCritical
Publication of FR1474957ApublicationCriticalpatent/FR1474957A/fr