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Priority to FI832679ApriorityCriticalpatent/FI68476C/fi
Publication of FI832679A0publicationCriticalpatent/FI832679A0/fi
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Application grantedgrantedCritical
Publication of FI68476BpublicationCriticalpatent/FI68476B/fi
Publication of FI68476CpublicationCriticalpatent/FI68476C/fi