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Priority claimed from FR8900034Aexternal-prioritypatent/FR2641300B1/fr
Priority claimed from FR8914183Aexternal-prioritypatent/FR2653799B2/fr
Application filed by Couvraneuf SafiledCriticalCouvraneuf Sa
Application grantedgrantedCritical
Publication of ATE74988T1publicationCriticalpatent/ATE74988T1/de