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Application filed by Tapio PirttinenfiledCriticalTapio Pirttinen
Priority to FI842322ApriorityCriticalpatent/FI71901C/fi
Publication of FI842322A0publicationCriticalpatent/FI842322A0/fi
Publication of FI842322ApublicationCriticalpatent/FI842322A/fi
Application grantedgrantedCritical
Publication of FI71901BpublicationCriticalpatent/FI71901B/fi
Publication of FI71901CpublicationCriticalpatent/FI71901C/fi