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Priority claimed from FR8119305Aexternal-prioritypatent/FR2514594A1/fr
Priority claimed from FR8214950Aexternal-prioritypatent/FR2532467A1/fr
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Priority claimed from EP82401790Aexternal-prioritypatent/EP0074319B1/de
Application grantedgrantedCritical
Publication of ATE14177T1publicationCriticalpatent/ATE14177T1/de