Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kauko Ilmari TarvainenfiledCriticalKauko Ilmari Tarvainen
Priority to FI761247ApriorityCriticalpatent/FI61263C/fi
Publication of FI761247ApublicationCriticalpatent/FI761247A/fi
Application grantedgrantedCritical
Publication of FI61263BpublicationCriticalpatent/FI61263B/fi
Publication of FI61263CpublicationCriticalpatent/FI61263C/fi