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Priority to FI851190ApriorityCriticalpatent/FI72232C/en
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Publication of FI851190LpublicationCriticalpatent/FI851190L/en
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Publication of FI72232BpublicationCriticalpatent/FI72232B/en
Publication of FI72232CpublicationCriticalpatent/FI72232C/en