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Application filed by Tuure Tapio RantakangasfiledCriticalTuure Tapio Rantakangas
Priority to FI902172ApriorityCriticalpatent/FI84391C/fi
Publication of FI902172A0publicationCriticalpatent/FI902172A0/fi
Publication of FI902172ApublicationCriticalpatent/FI902172A/fi
Publication of FI84391BpublicationCriticalpatent/FI84391B/fi
Application grantedgrantedCritical
Publication of FI84391CpublicationCriticalpatent/FI84391C/fi