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Application filed by Erkki VesterinenfiledCriticalErkki Vesterinen
Priority to FI844324ApriorityCriticalpatent/FI74800C/fi
Publication of FI844324A0publicationCriticalpatent/FI844324A0/fi
Publication of FI844324LpublicationCriticalpatent/FI844324L/fi
Publication of FI74800BpublicationCriticalpatent/FI74800B/fi
Application grantedgrantedCritical
Publication of FI74800CpublicationCriticalpatent/FI74800C/fi