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Priority claimed from FR8805728Aexternal-prioritypatent/FR2630488B1/en
Priority claimed from FR8807057Aexternal-prioritypatent/FR2632005B1/en
Application filed by Ferco Int Usine FerruresfiledCriticalFerco Int Usine Ferrures
Priority claimed from EP19890440028external-prioritypatent/EP0341173B1/en
Application grantedgrantedCritical
Publication of ATE80199T1publicationCriticalpatent/ATE80199T1/en