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Priority to FI900718ApriorityCriticalpatent/FI85995C/en
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Publication of FI900718ApublicationCriticalpatent/FI900718A/en
Publication of FI85995BpublicationCriticalpatent/FI85995B/en
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Publication of FI85995CpublicationCriticalpatent/FI85995C/en