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Priority claimed from FR8609089Aexternal-prioritypatent/FR2600717B1/en
Priority claimed from FR8704389Aexternal-prioritypatent/FR2613438B1/en
Application filed by Ars Forges BoulonneriesfiledCriticalArs Forges Boulonneries
Priority claimed from EP19870401430external-prioritypatent/EP0251887B1/en
Application grantedgrantedCritical
Publication of ATE59879T1publicationCriticalpatent/ATE59879T1/en