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 FR7919168Aexternal-prioritypatent/FR2462645A1/en
Priority claimed from FR8012620Aexternal-prioritypatent/FR2484053A2/en
Application filed by Raoul FremyfiledCriticalRaoul Fremy
Priority claimed from EP80401034Aexternal-prioritypatent/EP0023853B1/en
Application grantedgrantedCritical
Publication of ATE3328T1publicationCriticalpatent/ATE3328T1/en