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Priority claimed from SE8600448Aexternal-prioritypatent/SE453714B/en
Priority claimed from SE8604231Aexternal-prioritypatent/SE8604231D0/en
Application filed by Shell Int ResearchfiledCriticalShell Int Research
Priority claimed from EP87850032Aexternal-prioritypatent/EP0233164B1/en
Application grantedgrantedCritical
Publication of ATE52001T1publicationCriticalpatent/ATE52001T1/en