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Application filed by Matti ToivolafiledCriticalMatti Toivola
Priority to FI894920ApriorityCriticalpatent/FI83830C/en
Publication of FI894920A0publicationCriticalpatent/FI894920A0/en
Application grantedgrantedCritical
Publication of FI83830BpublicationCriticalpatent/FI83830B/en
Publication of FI83830CpublicationCriticalpatent/FI83830C/en