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Priority to FI910438ApriorityCriticalpatent/FI90683C/sv
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Publication of FI910438ApublicationCriticalpatent/FI910438A/sv
Publication of FI90683BpublicationCriticalpatent/FI90683B/sv
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Publication of FI90683CpublicationCriticalpatent/FI90683C/sv