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Application filed by Pertti PasanenfiledCriticalPertti Pasanen
Priority to FI811322ApriorityCriticalpatent/FI63861C/en
Publication of FI811322LpublicationCriticalpatent/FI811322L/en
Application grantedgrantedCritical
Publication of FI63861BpublicationCriticalpatent/FI63861B/en
Publication of FI63861CpublicationCriticalpatent/FI63861C/en