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 Juhani RuppafiledCriticalJuhani Ruppa
Priority to FI750148ApriorityCriticalpatent/FI51789C/fi
Publication of FI750148ApublicationCriticalpatent/FI750148A/fi
Application grantedgrantedCritical
Publication of FI51789BpublicationCriticalpatent/FI51789B/fi
Publication of FI51789CpublicationCriticalpatent/FI51789C/fi