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 Ilmari MattinenfiledCriticalIlmari Mattinen
Priority to FI123574ApriorityCriticalpatent/FI52922C/fi
Publication of FI123574ApublicationCriticalpatent/FI123574A/fi
Publication of FI52922BpublicationCriticalpatent/FI52922B/fi
Application grantedgrantedCritical
Publication of FI52922CpublicationCriticalpatent/FI52922C/fi