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Priority to FI930368ApriorityCriticalpatent/FI92749C/fi
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Publication of FI930368ApublicationCriticalpatent/FI930368A/fi
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Publication of FI92749BpublicationCriticalpatent/FI92749B/fi
Publication of FI92749CpublicationCriticalpatent/FI92749C/fi