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 FR8017927Aexternal-prioritypatent/FR2488625A1/fr
Priority claimed from FR8024001Aexternal-prioritypatent/FR2499114A1/fr
Application filed by Maurice FreyfiledCriticalMaurice Frey
Priority claimed from EP19810430025external-prioritypatent/EP0046131B1/de
Application grantedgrantedCritical
Publication of ATE8157T1publicationCriticalpatent/ATE8157T1/de