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Priority claimed from FR7824330Aexternal-prioritypatent/FR2434003A1/fr
Priority claimed from FR7915351Aexternal-prioritypatent/FR2459107A2/fr
Application filed by Imphy S.A.filedCriticalImphy S.A.
Priority claimed from EP19790400549external-prioritypatent/EP0008550B1/de
Application grantedgrantedCritical
Publication of ATE869T1publicationCriticalpatent/ATE869T1/de