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Priority claimed from FR8007190Aexternal-prioritypatent/FR2478941A1/fr
Priority claimed from FR8017894Aexternal-prioritypatent/FR2488480A1/fr
Priority claimed from FR8103317Aexternal-prioritypatent/FR2499816B2/fr
Application filed by SogefinafiledCriticalSogefina
Priority claimed from EP81400498Aexternal-prioritypatent/EP0037337B1/de
Application grantedgrantedCritical
Publication of ATE13795T1publicationCriticalpatent/ATE13795T1/de