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Priority claimed from FR8211939Aexternal-prioritypatent/FR2529991B1/fr
Application filed by Vetco Offshore Ind IncfiledCriticalVetco Offshore Ind Inc
Priority claimed from EP83401399Aexternal-prioritypatent/EP0100259B1/de
Application grantedgrantedCritical
Publication of ATE23602T1publicationCriticalpatent/ATE23602T1/de