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 Vilho Juhani SarvelafiledCriticalVilho Juhani Sarvela
Priority to FI246472ApriorityCriticalpatent/FI49357C/fi
Application grantedgrantedCritical
Publication of FI49357BpublicationCriticalpatent/FI49357B/fi
Publication of FI49357CpublicationCriticalpatent/FI49357C/fi