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Priority claimed from JP63309598Aexternal-prioritypatent/JPH0726279B2/ja
Priority claimed from JP30959988Aexternal-prioritypatent/JPH0665774B2/ja
Priority claimed from FI895666Aexternal-prioritypatent/FI91000C/fi
Application filed by Nippon Felt Co LtdfiledCriticalNippon Felt Co Ltd
Publication of FI932413ApublicationCriticalpatent/FI932413A/fi
Publication of FI932413A0publicationCriticalpatent/FI932413A0/fi
Publication of FI91001BpublicationCriticalpatent/FI91001B/fi
Application grantedgrantedCritical
Publication of FI91001CpublicationCriticalpatent/FI91001C/fi