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Application filed by Vilho KangasfiledCriticalVilho Kangas
Priority to FI319671ApriorityCriticalpatent/FI47749C/fi
Application grantedgrantedCritical
Publication of FI47749BpublicationCriticalpatent/FI47749B/fi
Publication of FI47749CpublicationCriticalpatent/FI47749C/fi