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 Spanberg BfiledCriticalSpanberg B
Application grantedgrantedCritical
Publication of FI52756BpublicationCriticalpatent/FI52756B/fi
Publication of FI52756CpublicationCriticalpatent/FI52756C/fi