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Application filed by Kullervo Ketolainen Ja Eero SafiledCriticalKullervo Ketolainen Ja Eero Sa
Priority to FI891635ApriorityCriticalpatent/FI85313C/fi
Publication of FI891635A0publicationCriticalpatent/FI891635A0/fi
Publication of FI891635ApublicationCriticalpatent/FI891635A/fi
Application grantedgrantedCritical
Publication of FI85313BpublicationCriticalpatent/FI85313B/fi
Publication of FI85313CpublicationCriticalpatent/FI85313C/fi