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 FR765786ApriorityCriticalpatent/FR1250421A/fr
Application grantedgrantedCritical
Publication of FR1250421ApublicationCriticalpatent/FR1250421A/fr