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Priority to FI872476ApriorityCriticalpatent/FI82121C/fi
Publication of FI872476A0publicationCriticalpatent/FI872476A0/fi
Priority to FI881665Aprioritypatent/FI82122C/fi
Publication of FI872476ApublicationCriticalpatent/FI872476A/fi
Application grantedgrantedCritical
Publication of FI82121BpublicationCriticalpatent/FI82121B/fi
Publication of FI82121CpublicationCriticalpatent/FI82121C/fi