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 Ahlstroem OyfiledCriticalAhlstroem Oy
Priority to FI260674ApriorityCriticalpatent/FI50686C/fi
Application grantedgrantedCritical
Publication of FI50686BpublicationCriticalpatent/FI50686B/fi
Publication of FI50686CpublicationCriticalpatent/FI50686C/fi