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Application filed by Helsingin Puhelin OyjfiledCriticalHelsingin Puhelin Oyj
Priority to FI981620ApriorityCriticalpatent/FI108194B/fi
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Publication of FI981620ApublicationCriticalpatent/FI981620A/fi
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Publication of FI108194BpublicationCriticalpatent/FI108194B/fi