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Priority to FI964274ApriorityCriticalpatent/FI102252B/sv
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Publication of FI964274ApublicationCriticalpatent/FI964274A/sv
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Publication of FI102252B1publicationCriticalpatent/FI102252B1/sv
Publication of FI102252BpublicationCriticalpatent/FI102252B/sv