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 Raimo Veli Johann Silvennoinen, Jaakko Kustaa VirtanenfiledCriticalRaimo Veli Johann Silvennoinen
Priority to FI843703ApriorityCriticalpatent/FI70476C/fi
Publication of FI843703A0publicationCriticalpatent/FI843703A0/fi
Application grantedgrantedCritical
Publication of FI70476BpublicationCriticalpatent/FI70476B/fi
Publication of FI70476CpublicationCriticalpatent/FI70476C/fi