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Application filed by Pentti VakkarifiledCriticalPentti Vakkari
Priority to FI921041ApriorityCriticalpatent/FI90030C/fi
Publication of FI921041A0publicationCriticalpatent/FI921041A0/fi
Publication of FI90030BpublicationCriticalpatent/FI90030B/fi
Application grantedgrantedCritical
Publication of FI90030CpublicationCriticalpatent/FI90030C/fi