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Priority claimed from FR8504158Aexternal-prioritypatent/FR2578796B1/en
Priority claimed from FR8518147Aexternal-prioritypatent/FR2590856B2/en
Application filed by Marcel CarriefiledCriticalMarcel Carrie
Priority claimed from EP19860420067external-prioritypatent/EP0198772B1/en
Application grantedgrantedCritical
Publication of ATE42244T1publicationCriticalpatent/ATE42244T1/en