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Priority claimed from US06/683,669external-prioritypatent/US4647077A/en
Application filed by Vickers PlcfiledCriticalVickers Plc
Priority claimed from EP19850903942external-prioritypatent/EP0190263B1/en
Application grantedgrantedCritical
Publication of ATE60830T1publicationCriticalpatent/ATE60830T1/en