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Priority to FI896356ApriorityCriticalpatent/FI84737C/fi
Publication of FI896356A0publicationCriticalpatent/FI896356A0/fi
Publication of FI896356ApublicationCriticalpatent/FI896356A/fi
Publication of FI84737BpublicationCriticalpatent/FI84737B/fi
Application grantedgrantedCritical
Publication of FI84737CpublicationCriticalpatent/FI84737C/fi