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Priority to FI933930ApriorityCriticalpatent/FI96842C/en
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Publication of FI933930ApublicationCriticalpatent/FI933930A/en
Publication of FI96842BpublicationCriticalpatent/FI96842B/en
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Publication of FI96842CpublicationCriticalpatent/FI96842C/en