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Application filed by Matti Kalervo KotakorpifiledCriticalMatti Kalervo Kotakorpi
Priority to FI761336ApriorityCriticalpatent/FI55793C/fi
Priority to JP5114977Aprioritypatent/JPS52139525A/ja
Publication of FI761336A7publicationCriticalpatent/FI761336A7/fi
Publication of FI55793BpublicationCriticalpatent/FI55793B/fi
Application grantedgrantedCritical
Publication of FI55793CpublicationCriticalpatent/FI55793C/fi