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Priority claimed from FI3720/74Aexternal-prioritypatent/FI372074A7/fi
Application filed by Valmet OyfiledCriticalValmet Oy
Priority to FI761114ApriorityCriticalpatent/FI66933C/fi
Publication of FI761114A7publicationCriticalpatent/FI761114A7/fi
Application grantedgrantedCritical
Publication of FI66933BpublicationCriticalpatent/FI66933B/fi
Publication of FI66933CpublicationCriticalpatent/FI66933C/fi