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Priority claimed from FR8805939Aexternal-prioritypatent/FR2630417A1/fr
Priority claimed from FR8807823Aexternal-prioritypatent/FR2632292B2/fr
Application filed by Maurice GrangerfiledCriticalMaurice Granger
Application grantedgrantedCritical
Publication of ATE74873T1publicationCriticalpatent/ATE74873T1/de