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 Valtion TeknillinenfiledCriticalValtion Teknillinen
Priority to FI875529ApriorityCriticalpatent/FI81679C/fi
Publication of FI875529A0publicationCriticalpatent/FI875529A0/fi
Publication of FI875529ApublicationCriticalpatent/FI875529A/fi
Publication of FI81679BpublicationCriticalpatent/FI81679B/fi
Application grantedgrantedCritical
Publication of FI81679CpublicationCriticalpatent/FI81679C/fi