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Priority claimed from FI358272Aexternal-prioritypatent/FI50396C/fi
Application filed by Tyoetehoseura R YfiledCriticalTyoetehoseura R Y
Priority to FI105574ApriorityCriticalpatent/FI50495C/fi
Priority to DE2428733Aprioritypatent/DE2428733A1/de
Publication of FI50495BpublicationCriticalpatent/FI50495B/fi
Application grantedgrantedCritical
Publication of FI50495CpublicationCriticalpatent/FI50495C/fi