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Application filed by Viljo Gunnar KorpelafiledCriticalViljo Gunnar Korpela
Priority to FI750200ApriorityCriticalpatent/FI54227C/fi
Publication of FI750200A7publicationCriticalpatent/FI750200A7/fi
Publication of FI54227BpublicationCriticalpatent/FI54227B/fi
Application grantedgrantedCritical
Publication of FI54227CpublicationCriticalpatent/FI54227C/fi