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Application filed by Vilho HinkkanenfiledCriticalVilho Hinkkanen
Priority to FI902381ApriorityCriticalpatent/FI902381A/fi
Publication of FI902381A0publicationCriticalpatent/FI902381A0/fi
Priority to FI912293Aprioritypatent/FI912293A/fi
Publication of FI902381ApublicationCriticalpatent/FI902381A/fi