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
Priority claimed from FI833895Aexternal-prioritypatent/FI67589C/fi
Application filed by Ahlstroem Oy, Schauman Wilh OyfiledCriticalAhlstroem Oy
Publication of NO852531LpublicationCriticalpatent/NO852531L/no
Publication of NO159109BpublicationCriticalpatent/NO159109B/no
Publication of NO159109CpublicationCriticalpatent/NO159109C/no