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Priority to FI904260ApriorityCriticalpatent/FI85522C/en
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Publication of FI904260ApublicationCriticalpatent/FI904260A/en
Publication of FI85522BpublicationCriticalpatent/FI85522B/en
Application grantedgrantedCritical
Publication of FI85522CpublicationCriticalpatent/FI85522C/en