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 Ingenioers N Einar Eriksson &filedCriticalIngenioers N Einar Eriksson &
Publication of FI30557ApublicationCriticalpatent/FI30557A/en