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Priority to FI933407ApriorityCriticalpatent/FI98285C/en
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Publication of FI933407ApublicationCriticalpatent/FI933407A/en
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Publication of FI98285BpublicationCriticalpatent/FI98285B/en
Publication of FI98285CpublicationCriticalpatent/FI98285C/en