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Application filed by Pentti Jaakko KarjalainenfiledCriticalPentti Jaakko Karjalainen
Priority to FI306674ApriorityCriticalpatent/FI50769C/fi
Application grantedgrantedCritical
Publication of FI50769BpublicationCriticalpatent/FI50769B/fi
Publication of FI50769CpublicationCriticalpatent/FI50769C/fi