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Application filed by Ismo Sakari MankonenfiledCriticalIsmo Sakari Mankonen
Priority to FI885791ApriorityCriticalpatent/FI82523C/fi
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Publication of FI885791ApublicationCriticalpatent/FI885791A/fi
Publication of FI82523BpublicationCriticalpatent/FI82523B/fi
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Publication of FI82523CpublicationCriticalpatent/FI82523C/fi