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Application filed by Viljo SaarelainenfiledCriticalViljo Saarelainen
Priority to FI864247ApriorityCriticalpatent/FI79374C/fi
Publication of FI864247A0publicationCriticalpatent/FI864247A0/fi
Publication of FI864247ApublicationCriticalpatent/FI864247A/fi
Publication of FI79374BpublicationCriticalpatent/FI79374B/fi
Application grantedgrantedCritical
Publication of FI79374CpublicationCriticalpatent/FI79374C/fi