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 FI834185Aexternal-prioritypatent/FI78348C/en
Application filed by Tekma OyfiledCriticalTekma Oy
Application grantedgrantedCritical
Publication of ATE33185T1publicationCriticalpatent/ATE33185T1/en