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Priority claimed from FR8704885Aexternal-prioritypatent/FR2613742B1/fr
Priority claimed from FR8717571Aexternal-prioritypatent/FR2624897B2/fr
Application filed by Pont A MoussonfiledCriticalPont A Mousson
Priority claimed from EP88470005Aexternal-prioritypatent/EP0286562B1/de
Application grantedgrantedCritical
Publication of ATE73514T1publicationCriticalpatent/ATE73514T1/de