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Priority claimed from FI772210Aexternal-prioritypatent/FI55637C/en
Application filed by Outokumpu OyfiledCriticalOutokumpu Oy
Priority to FI782123ApriorityCriticalpatent/FI56817C/en
Publication of FI782123ApublicationCriticalpatent/FI782123A/en
Application grantedgrantedCritical
Publication of FI56817BpublicationCriticalpatent/FI56817B/en
Publication of FI56817CpublicationCriticalpatent/FI56817C/en