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Publication date
Priority claimed from US06/488,633external-prioritypatent/US4537429A/en
Priority claimed from PCT/US1984/000520external-prioritypatent/WO1984004352A1/en
Application filed by Hydril CofiledCriticalHydril Co
Publication of NO845178LpublicationCriticalpatent/NO845178L/no
Publication of NO164796BpublicationCriticalpatent/NO164796B/no
Publication of NO164796CpublicationCriticalpatent/NO164796C/no