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Application filed by Jaakko RikamafiledCriticalJaakko Rikama
Priority to FI752511ApriorityCriticalpatent/FI58286C/fi
Publication of FI752511A7publicationCriticalpatent/FI752511A7/fi
Application grantedgrantedCritical
Publication of FI58286BpublicationCriticalpatent/FI58286B/fi
Publication of FI58286CpublicationCriticalpatent/FI58286C/fi