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Application filed by Osmo Ensio KoivunenfiledCriticalOsmo Ensio Koivunen
Priority to FI854312ApriorityCriticalpatent/FI74512C/fi
Publication of FI854312A0publicationCriticalpatent/FI854312A0/fi
Publication of FI854312ApublicationCriticalpatent/FI854312A/fi
Publication of FI74512BpublicationCriticalpatent/FI74512B/fi
Application grantedgrantedCritical
Publication of FI74512CpublicationCriticalpatent/FI74512C/fi