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Priority claimed from FR8113231Aexternal-prioritypatent/FR2509035B1/fr
Priority claimed from FR8117682Aexternal-prioritypatent/FR2513367B1/fr
Application filed by Robert Maurice GramardfiledCriticalRobert Maurice Gramard
Priority claimed from EP19820401257external-prioritypatent/EP0069668B1/de
Application grantedgrantedCritical
Publication of ATE15939T1publicationCriticalpatent/ATE15939T1/de