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Application filed by Esko Viljo NurmifiledCriticalEsko Viljo Nurmi
Priority to FI69771ApriorityCriticalpatent/FI48889C/en
Publication of FI48889BpublicationCriticalpatent/FI48889B/fi
Application grantedgrantedCritical
Publication of FI48889CpublicationCriticalpatent/FI48889C/en