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Application filed by Vilho HotarinenfiledCriticalVilho Hotarinen
Priority to FI1952/74ApriorityCriticalpatent/FI53950C/fi
Publication of FI195274A7publicationCriticalpatent/FI195274A7/fi
Application grantedgrantedCritical
Publication of FI53950BpublicationCriticalpatent/FI53950B/fi
Publication of FI53950CpublicationCriticalpatent/FI53950C/fi