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 Pentti Jaakko KarjalainenfiledCriticalPentti Jaakko Karjalainen
Priority to FI306774ApriorityCriticalpatent/FI50770C/fi
Publication of FI50770BpublicationCriticalpatent/FI50770B/fi
Application grantedgrantedCritical
Publication of FI50770CpublicationCriticalpatent/FI50770C/fi