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Priority claimed from NO833729Aexternal-prioritypatent/NO153208C/en
Application filed by Per H MoefiledCriticalPer H Moe
Priority claimed from EP84903718Aexternal-prioritypatent/EP0159341B1/en
Application grantedgrantedCritical
Publication of ATE34689T1publicationCriticalpatent/ATE34689T1/en