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 FI853464Aexternal-prioritypatent/FI853464A0/en
Application filed by Ahlstroem OyfiledCriticalAhlstroem Oy
Application grantedgrantedCritical
Publication of ATE63783T1publicationCriticalpatent/ATE63783T1/en