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Application filed by Bjarne Holmbom, Eero AvelafiledCriticalBjarne Holmbom
Priority to FI190374ApriorityCriticalpatent/FI50884C/fi
Publication of FI190374ApublicationCriticalpatent/FI190374A/fi
Publication of FI50884BpublicationCriticalpatent/FI50884B/fi
Application grantedgrantedCritical
Publication of FI50884CpublicationCriticalpatent/FI50884C/fi