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Priority to FI930502ApriorityCriticalpatent/FI93621C/en
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Publication of FI930502ApublicationCriticalpatent/FI930502A/en
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Publication of FI93621BpublicationCriticalpatent/FI93621B/en
Publication of FI93621CpublicationCriticalpatent/FI93621C/en