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 FR8407786Aexternal-prioritypatent/FR2564414B1/en
Priority claimed from FR8419173Aexternal-prioritypatent/FR2574743B1/en
Application filed by Beyl Jean Joseph AlfredfiledCriticalBeyl Jean Joseph Alfred
Priority claimed from EP85400753Aexternal-prioritypatent/EP0169080B1/en
Application grantedgrantedCritical
Publication of ATE33006T1publicationCriticalpatent/ATE33006T1/en