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Priority claimed from FR8026810Aexternal-prioritypatent/FR2496194A1/fr
Priority claimed from FR8104555Aexternal-prioritypatent/FR2500983A1/fr
Application filed by Hubert DefrancqfiledCriticalHubert Defrancq
Priority claimed from EP81401977Aexternal-prioritypatent/EP0054487B1/de
Application grantedgrantedCritical
Publication of ATE9176T1publicationCriticalpatent/ATE9176T1/de