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 FI883650Aexternal-prioritypatent/FI81051C/fi
Application filed by Wisapak Oy AbfiledCriticalWisapak Oy Ab
Application grantedgrantedCritical
Publication of ATE97066T1publicationCriticalpatent/ATE97066T1/de