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Priority claimed from FI875365Aexternal-prioritypatent/FI875365A0/en
Priority claimed from FI881801Aexternal-prioritypatent/FI79186B/en
Application filed by Vilho HinkkanenfiledCriticalVilho Hinkkanen
Publication of NO902515LpublicationCriticalpatent/NO902515L/en
Publication of NO902515D0publicationCriticalpatent/NO902515D0/en