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Application filed by Valtion TeknillinenfiledCriticalValtion Teknillinen
Priority to FI864591ApriorityCriticalpatent/FI79413C/fi
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Publication of FI864591ApublicationCriticalpatent/FI864591A/fi
Publication of FI79413BpublicationCriticalpatent/FI79413B/fi
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Publication of FI79413CpublicationCriticalpatent/FI79413C/fi