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.)
Publication date
Application grantedgrantedCritical
Publication of FR1075272ApublicationCriticalpatent/FR1075272A/fr
Priority claimed from DEU1522Aexternal-prioritypatent/DE1012229B/de